/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 13:18:22,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 13:18:22,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 13:18:22,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 13:18:22,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 13:18:22,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 13:18:22,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 13:18:22,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 13:18:22,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 13:18:22,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 13:18:22,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 13:18:22,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 13:18:22,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 13:18:22,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 13:18:22,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 13:18:22,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 13:18:22,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 13:18:22,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 13:18:22,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 13:18:22,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 13:18:22,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 13:18:22,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 13:18:22,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 13:18:22,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 13:18:22,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 13:18:22,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 13:18:22,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 13:18:22,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 13:18:22,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 13:18:22,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 13:18:22,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 13:18:22,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 13:18:22,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 13:18:22,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 13:18:22,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 13:18:22,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 13:18:22,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 13:18:22,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 13:18:22,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 13:18:22,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 13:18:22,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 13:18:22,094 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 13:18:22,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 13:18:22,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 13:18:22,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 13:18:22,110 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 13:18:22,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 13:18:22,110 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:18:22,111 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 13:18:22,111 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 13:18:22,111 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 13:18:22,111 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 13:18:22,111 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 13:18:22,111 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 13:18:22,112 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 13:18:22,112 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 13:18:22,112 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:22,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 13:18:22,112 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 13:18:22,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 13:18:22,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 13:18:22,113 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 13:18:22,113 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 13:18:22,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 13:18:22,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 13:18:22,114 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 13:18:22,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:18:22,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 13:18:22,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 13:18:22,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 13:18:22,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 13:18:22,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 13:18:22,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 13:18:22,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 13:18:22,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 13:18:22,304 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 13:18:22,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 13:18:22,375 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_vuh26K/tmp/c37810e942aa49d986d26aaa9bcc0c9f/FLAG7c5c29f02 [2020-07-01 13:18:22,700 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 13:18:22,701 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 13:18:22,708 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_vuh26K/tmp/c37810e942aa49d986d26aaa9bcc0c9f/FLAG7c5c29f02 [2020-07-01 13:18:23,114 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_vuh26K/tmp/c37810e942aa49d986d26aaa9bcc0c9f [2020-07-01 13:18:23,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 13:18:23,127 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 13:18:23,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 13:18:23,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 13:18:23,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 13:18:23,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dcc5086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23, skipping insertion in model container [2020-07-01 13:18:23,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 13:18:23,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 13:18:23,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:18:23,396 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 13:18:23,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:18:23,428 INFO L208 MainTranslator]: Completed translation [2020-07-01 13:18:23,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23 WrapperNode [2020-07-01 13:18:23,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 13:18:23,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 13:18:23,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 13:18:23,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 13:18:23,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 13:18:23,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 13:18:23,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 13:18:23,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 13:18:23,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 13:18:23,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 13:18:23,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 13:18:23,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 13:18:23,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:18:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure Ack [2020-07-01 13:18:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure Ack [2020-07-01 13:18:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 13:18:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 13:18:23,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 13:18:23,722 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-01 13:18:23,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:18:23 BoogieIcfgContainer [2020-07-01 13:18:23,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 13:18:23,726 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 13:18:23,726 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 13:18:23,728 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 13:18:23,729 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:18:23" (1/1) ... [2020-07-01 13:18:23,744 INFO L313 BlockEncoder]: Initial Icfg 17 locations, 22 edges [2020-07-01 13:18:23,745 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 13:18:23,746 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 13:18:23,747 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 13:18:23,747 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:18:23,749 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 13:18:23,750 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 13:18:23,750 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 13:18:23,765 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 13:18:23,780 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 13:18:23,784 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:18:23,786 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:18:23,795 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 13:18:23,797 INFO L70 RemoveSinkStates]: Removed 4 edges and 3 locations by removing sink states [2020-07-01 13:18:23,799 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:18:23,799 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:18:23,805 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 13:18:23,805 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:18:23,806 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:18:23,806 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:18:23,806 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 13:18:23,807 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:18:23,807 INFO L313 BlockEncoder]: Encoded RCFG 12 locations, 18 edges [2020-07-01 13:18:23,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:18:23 BasicIcfg [2020-07-01 13:18:23,808 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 13:18:23,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 13:18:23,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 13:18:23,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 13:18:23,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 01:18:23" (1/4) ... [2020-07-01 13:18:23,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b55c475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:18:23, skipping insertion in model container [2020-07-01 13:18:23,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (2/4) ... [2020-07-01 13:18:23,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b55c475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:18:23, skipping insertion in model container [2020-07-01 13:18:23,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:18:23" (3/4) ... [2020-07-01 13:18:23,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b55c475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:18:23, skipping insertion in model container [2020-07-01 13:18:23,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:18:23" (4/4) ... [2020-07-01 13:18:23,816 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:18:23,827 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 13:18:23,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 13:18:23,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 13:18:23,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 13:18:23,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 13:18:23,871 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:18:23,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:18:23,871 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:18:23,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 13:18:23,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:18:23,872 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 13:18:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-01 13:18:23,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 13:18:23,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-07-01 13:18:23,970 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-01 13:18:23,970 INFO L268 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-07-01 13:18:23,970 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-01 13:18:23,970 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-07-01 13:18:23,970 INFO L268 CegarLoopResult]: For program point AckFINAL(lines 10 15) no Hoare annotation was computed. [2020-07-01 13:18:23,971 INFO L271 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: true [2020-07-01 13:18:23,971 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-07-01 13:18:23,971 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-07-01 13:18:23,971 INFO L268 CegarLoopResult]: For program point AckEXIT(lines 10 15) no Hoare annotation was computed. [2020-07-01 13:18:23,971 INFO L271 CegarLoopResult]: At program point AckENTRY(lines 10 15) the Hoare annotation is: true [2020-07-01 13:18:23,971 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 13:18:23,972 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-07-01 13:18:23,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:18:23 BasicIcfg [2020-07-01 13:18:23,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 13:18:23,976 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 13:18:23,977 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 13:18:23,980 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 13:18:23,981 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:18:23,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 01:18:23" (1/5) ... [2020-07-01 13:18:23,982 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45f26550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:18:23, skipping insertion in model container [2020-07-01 13:18:23,982 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:18:23,983 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:18:23" (2/5) ... [2020-07-01 13:18:23,983 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45f26550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:18:23, skipping insertion in model container [2020-07-01 13:18:23,983 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:18:23,983 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:18:23" (3/5) ... [2020-07-01 13:18:23,984 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45f26550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:18:23, skipping insertion in model container [2020-07-01 13:18:23,984 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:18:23,984 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:18:23" (4/5) ... [2020-07-01 13:18:23,984 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45f26550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:18:23, skipping insertion in model container [2020-07-01 13:18:23,984 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:18:23,984 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:18:23" (5/5) ... [2020-07-01 13:18:23,986 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:18:24,015 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 13:18:24,015 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 13:18:24,015 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:18:24,015 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:18:24,016 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:18:24,016 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 13:18:24,016 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:18:24,016 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 13:18:24,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-07-01 13:18:24,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 13:18:24,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:18:24,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:18:24,047 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:18:24,047 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 13:18:24,047 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 13:18:24,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-07-01 13:18:24,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 13:18:24,049 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:18:24,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:18:24,050 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:18:24,050 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 13:18:24,055 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [65] ULTIMATE.startENTRY-->L23: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_8) InVars {} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_#t~ret5=|v_ULTIMATE.start_main_#t~ret5_6|, ULTIMATE.start_main_~r~0=v_ULTIMATE.start_main_~r~0_3, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~ret5, ULTIMATE.start_main_~r~0, ULTIMATE.start_main_~x~0] 5#L23true [49] L23-->AckENTRY: Formula: (and (= |v_Ack_#in~mInParam_4| v_ULTIMATE.start_main_~x~0_7) (= |v_Ack_#in~nInParam_4| v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{Ack_#in~n=|v_Ack_#in~nInParam_4|, Ack_#in~m=|v_Ack_#in~mInParam_4|} AuxVars[] AssignedVars[Ack_#in~n, Ack_#in~m]< 13#AckENTRYtrue [2020-07-01 13:18:24,056 INFO L796 eck$LassoCheckResult]: Loop: 13#AckENTRYtrue [52] AckENTRY-->L12: Formula: (and (= v_Ack_~n_1 |v_Ack_#in~n_1|) (= v_Ack_~m_1 |v_Ack_#in~m_1|)) InVars {Ack_#in~n=|v_Ack_#in~n_1|, Ack_#in~m=|v_Ack_#in~m_1|} OutVars{Ack_#in~n=|v_Ack_#in~n_1|, Ack_#in~m=|v_Ack_#in~m_1|, Ack_~m=v_Ack_~m_1, Ack_~n=v_Ack_~n_1} AuxVars[] AssignedVars[Ack_~m, Ack_~n] 6#L12true [60] L12-->L13: Formula: (> 0 v_Ack_~m_3) InVars {Ack_~m=v_Ack_~m_3} OutVars{Ack_~m=v_Ack_~m_3} AuxVars[] AssignedVars[] 11#L13true [62] L13-->L14: Formula: (< 0 v_Ack_~n_4) InVars {Ack_~n=v_Ack_~n_4} OutVars{Ack_~n=v_Ack_~n_4} AuxVars[] AssignedVars[] 4#L14true [35] L14-->AckENTRY: Formula: (and (= |v_Ack_#in~mInParam_2| v_Ack_~m_8) (= |v_Ack_#in~nInParam_2| (+ v_Ack_~n_6 (- 1)))) InVars {Ack_~m=v_Ack_~m_8, Ack_~n=v_Ack_~n_6} OutVars{Ack_#in~n=|v_Ack_#in~nInParam_2|, Ack_#in~m=|v_Ack_#in~mInParam_2|} AuxVars[] AssignedVars[Ack_#in~n, Ack_#in~m]< 13#AckENTRYtrue [2020-07-01 13:18:24,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:18:24,062 INFO L82 PathProgramCache]: Analyzing trace with hash 3025, now seen corresponding path program 1 times [2020-07-01 13:18:24,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:18:24,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052083251] [2020-07-01 13:18:24,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:18:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:24,150 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:18:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:18:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash 2532270, now seen corresponding path program 1 times [2020-07-01 13:18:24,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:18:24,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014819454] [2020-07-01 13:18:24,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:18:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:24,163 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:18:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:18:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1499707522, now seen corresponding path program 1 times [2020-07-01 13:18:24,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:18:24,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329099458] [2020-07-01 13:18:24,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:18:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:18:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:18:24,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329099458] [2020-07-01 13:18:24,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:18:24,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 13:18:24,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392333591] [2020-07-01 13:18:24,346 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:18:24,347 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:18:24,347 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:18:24,347 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:18:24,347 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:18:24,347 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,348 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:18:24,348 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:18:24,348 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:18:24,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:18:24,348 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:18:24,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,484 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:18:24,485 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:24,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:24,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:24,503 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:24,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:24,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:24,543 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=-1} Honda state: {Ack_#in~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:24,575 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:24,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:24,579 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:24,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:24,615 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:24,615 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:24,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:24,651 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:24,652 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:24,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:24,688 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:24,688 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:24,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:24,724 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:24,724 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:24,756 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:24,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:18:24,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:24,851 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:18:24,854 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:18:24,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:18:24,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:18:24,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:18:24,854 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:18:24,854 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:24,854 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:18:24,855 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:18:24,855 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:18:24,855 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:18:24,855 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:18:24,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:24,958 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:18:24,964 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:24,968 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:18:24,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:18:24,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:18:24,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:18:24,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:18:24,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:18:24,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:18:24,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:18:24,979 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:25,013 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:18:25,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:18:25,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:18:25,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:18:25,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:18:25,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:18:25,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:18:25,018 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:18:25,020 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:25,053 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:18:25,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:18:25,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:18:25,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:18:25,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:18:25,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:18:25,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:18:25,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:18:25,066 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:25,099 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:18:25,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:18:25,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:18:25,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:18:25,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:18:25,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:18:25,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:18:25,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:18:25,106 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:25,138 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:18:25,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:18:25,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:18:25,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:18:25,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:18:25,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:18:25,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:18:25,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:18:25,145 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:25,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:18:25,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:18:25,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:18:25,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:18:25,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:18:25,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:18:25,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:18:25,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:18:25,183 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:25,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:18:25,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:18:25,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:18:25,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:18:25,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:18:25,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:18:25,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:18:25,219 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:18:25,221 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:25,254 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:18:25,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:18:25,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:18:25,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:18:25,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:18:25,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:18:25,258 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:18:25,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:18:25,261 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:18:25,267 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:18:25,267 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:18:25,274 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:18:25,274 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:18:25,275 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:18:25,275 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#in~n) = 1*Ack_#in~n Supporting invariants [] [2020-07-01 13:18:25,309 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:18:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:18:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:18:25,357 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 13:18:25,359 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:18:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:18:25,381 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 13:18:25,382 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:18:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:18:25,430 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 13:18:25,435 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 13:18:25,436 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 12 states. Second operand 4 states. [2020-07-01 13:18:25,580 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 12 states.. Second operand 4 states. Result 64 states and 105 transitions. Complement of second has 24 states. [2020-07-01 13:18:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 13:18:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 13:18:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 31 transitions. [2020-07-01 13:18:25,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 13:18:25,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:18:25,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 6 letters. Loop has 4 letters. [2020-07-01 13:18:25,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:18:25,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 2 letters. Loop has 8 letters. [2020-07-01 13:18:25,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:18:25,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 105 transitions. [2020-07-01 13:18:25,605 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-07-01 13:18:25,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 47 states and 86 transitions. [2020-07-01 13:18:25,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-07-01 13:18:25,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-07-01 13:18:25,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 86 transitions. [2020-07-01 13:18:25,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:18:25,618 INFO L688 BuchiCegarLoop]: Abstraction has 47 states and 86 transitions. [2020-07-01 13:18:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 86 transitions. [2020-07-01 13:18:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-07-01 13:18:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-01 13:18:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 59 transitions. [2020-07-01 13:18:25,659 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 59 transitions. [2020-07-01 13:18:25,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:18:25,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 13:18:25,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-01 13:18:25,662 INFO L87 Difference]: Start difference. First operand 35 states and 59 transitions. Second operand 5 states. [2020-07-01 13:18:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:18:25,801 INFO L93 Difference]: Finished difference Result 53 states and 88 transitions. [2020-07-01 13:18:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 13:18:25,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 88 transitions. [2020-07-01 13:18:25,810 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-07-01 13:18:25,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 53 states and 88 transitions. [2020-07-01 13:18:25,813 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2020-07-01 13:18:25,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-07-01 13:18:25,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 88 transitions. [2020-07-01 13:18:25,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:18:25,814 INFO L688 BuchiCegarLoop]: Abstraction has 53 states and 88 transitions. [2020-07-01 13:18:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 88 transitions. [2020-07-01 13:18:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-07-01 13:18:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-01 13:18:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 74 transitions. [2020-07-01 13:18:25,822 INFO L711 BuchiCegarLoop]: Abstraction has 47 states and 74 transitions. [2020-07-01 13:18:25,822 INFO L591 BuchiCegarLoop]: Abstraction has 47 states and 74 transitions. [2020-07-01 13:18:25,822 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 13:18:25,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 74 transitions. [2020-07-01 13:18:25,824 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2020-07-01 13:18:25,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:18:25,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:18:25,825 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-07-01 13:18:25,825 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 13:18:25,826 INFO L794 eck$LassoCheckResult]: Stem: 237#ULTIMATE.startENTRY [65] ULTIMATE.startENTRY-->L23: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_8) InVars {} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_#t~ret5=|v_ULTIMATE.start_main_#t~ret5_6|, ULTIMATE.start_main_~r~0=v_ULTIMATE.start_main_~r~0_3, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~ret5, ULTIMATE.start_main_~r~0, ULTIMATE.start_main_~x~0] 238#L23 [49] L23-->AckENTRY: Formula: (and (= |v_Ack_#in~mInParam_4| v_ULTIMATE.start_main_~x~0_7) (= |v_Ack_#in~nInParam_4| v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{Ack_#in~n=|v_Ack_#in~nInParam_4|, Ack_#in~m=|v_Ack_#in~mInParam_4|} AuxVars[] AssignedVars[Ack_#in~n, Ack_#in~m]< 252#AckENTRY [52] AckENTRY-->L12: Formula: (and (= v_Ack_~n_1 |v_Ack_#in~n_1|) (= v_Ack_~m_1 |v_Ack_#in~m_1|)) InVars {Ack_#in~n=|v_Ack_#in~n_1|, Ack_#in~m=|v_Ack_#in~m_1|} OutVars{Ack_#in~n=|v_Ack_#in~n_1|, Ack_#in~m=|v_Ack_#in~m_1|, Ack_~m=v_Ack_~m_1, Ack_~n=v_Ack_~n_1} AuxVars[] AssignedVars[Ack_~m, Ack_~n] 267#L12 [61] L12-->L13: Formula: (< 0 v_Ack_~m_3) InVars {Ack_~m=v_Ack_~m_3} OutVars{Ack_~m=v_Ack_~m_3} AuxVars[] AssignedVars[] 274#L13 [63] L13-->L14: Formula: (> 0 v_Ack_~n_4) InVars {Ack_~n=v_Ack_~n_4} OutVars{Ack_~n=v_Ack_~n_4} AuxVars[] AssignedVars[] 261#L14 [2020-07-01 13:18:25,826 INFO L796 eck$LassoCheckResult]: Loop: 261#L14 [35] L14-->AckENTRY: Formula: (and (= |v_Ack_#in~mInParam_2| v_Ack_~m_8) (= |v_Ack_#in~nInParam_2| (+ v_Ack_~n_6 (- 1)))) InVars {Ack_~m=v_Ack_~m_8, Ack_~n=v_Ack_~n_6} OutVars{Ack_#in~n=|v_Ack_#in~nInParam_2|, Ack_#in~m=|v_Ack_#in~mInParam_2|} AuxVars[] AssignedVars[Ack_#in~n, Ack_#in~m]< 278#AckENTRY [52] AckENTRY-->L12: Formula: (and (= v_Ack_~n_1 |v_Ack_#in~n_1|) (= v_Ack_~m_1 |v_Ack_#in~m_1|)) InVars {Ack_#in~n=|v_Ack_#in~n_1|, Ack_#in~m=|v_Ack_#in~m_1|} OutVars{Ack_#in~n=|v_Ack_#in~n_1|, Ack_#in~m=|v_Ack_#in~m_1|, Ack_~m=v_Ack_~m_1, Ack_~n=v_Ack_~n_1} AuxVars[] AssignedVars[Ack_~m, Ack_~n] 282#L12 [61] L12-->L13: Formula: (< 0 v_Ack_~m_3) InVars {Ack_~m=v_Ack_~m_3} OutVars{Ack_~m=v_Ack_~m_3} AuxVars[] AssignedVars[] 280#L13 [63] L13-->L14: Formula: (> 0 v_Ack_~n_4) InVars {Ack_~n=v_Ack_~n_4} OutVars{Ack_~n=v_Ack_~n_4} AuxVars[] AssignedVars[] 261#L14 [2020-07-01 13:18:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:18:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash 90169701, now seen corresponding path program 1 times [2020-07-01 13:18:25,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:18:25,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466877117] [2020-07-01 13:18:25,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:18:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:25,839 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:18:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:18:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2018132, now seen corresponding path program 1 times [2020-07-01 13:18:25,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:18:25,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316703369] [2020-07-01 13:18:25,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:18:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:25,850 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:18:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:18:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1507370312, now seen corresponding path program 1 times [2020-07-01 13:18:25,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:18:25,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409470615] [2020-07-01 13:18:25,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:18:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:18:25,868 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:18:25,942 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:18:25,942 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:18:25,943 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:18:25,943 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:18:25,943 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:18:25,943 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:25,943 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:18:25,943 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:18:25,943 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:18:25,944 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:18:25,944 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:18:25,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:25,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:25,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:25,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:25,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:25,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,047 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:18:26,047 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,053 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,057 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,057 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,108 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,145 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,145 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,182 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,182 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,216 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:18:26,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,448 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,449 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=-7, Ack_~n=-1} Honda state: {Ack_#in~n=-7, Ack_~n=-1} Generalized eigenvectors: [{Ack_#in~n=-1, Ack_~n=-1}, {Ack_#in~n=-1, Ack_~n=0}, {Ack_#in~n=7, Ack_~n=0}] Lambdas: [1, 7, 0] Nus: [0, 1] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,488 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,488 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=6, Ack_#in~m=6} Honda state: {Ack_~m=6, Ack_#in~m=6} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 13:18:26,595 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:18:26,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:18:26,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:18:26,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:18:26,595 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:18:26,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,595 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:18:26,595 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:18:26,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-07-01 13:18:26,596 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:18:26,596 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:18:26,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:18:26,746 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:18:26,746 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,754 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,790 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,790 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret5=0} Honda state: {ULTIMATE.start_main_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,827 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,863 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,863 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,899 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,899 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~r~0=0} Honda state: {ULTIMATE.start_main_~r~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,938 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,938 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0, Ack_#in~m=0} Honda state: {Ack_~m=4, Ack_#in~m=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:26,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:26,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:26,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:26,974 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:27,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:27,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:27,010 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:27,010 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:27,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:27,066 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:27,070 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:27,071 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:27,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:27,103 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:27,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:18:27,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:27,446 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:27,447 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0, Ack_#in~n=0} Honda state: {Ack_~n=-7, Ack_#in~n=-7} Generalized eigenvectors: [{Ack_~n=-1, Ack_#in~n=-1}, {Ack_~n=0, Ack_#in~n=0}, {Ack_~n=0, Ack_#in~n=0}] Lambdas: [1, 2, 0] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:27,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:27,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:27,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:27,484 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:27,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:27,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:27,520 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:27,520 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:27,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:27,552 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:27,556 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:27,556 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:18:27,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:18:27,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:18:27,593 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:18:27,593 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret6=0} Honda state: {ULTIMATE.start_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 13:18:27,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:18:27 BasicIcfg [2020-07-01 13:18:27,643 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 13:18:27,646 INFO L168 Benchmark]: Toolchain (without parser) took 4518.36 ms. Allocated memory was 649.6 MB in the beginning and 755.5 MB in the end (delta: 105.9 MB). Free memory was 562.8 MB in the beginning and 587.4 MB in the end (delta: -24.6 MB). Peak memory consumption was 224.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:18:27,646 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 13:18:27,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.96 ms. Allocated memory was 649.6 MB in the beginning and 690.0 MB in the end (delta: 40.4 MB). Free memory was 562.8 MB in the beginning and 653.9 MB in the end (delta: -91.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:18:27,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.03 ms. Allocated memory is still 690.0 MB. Free memory was 652.8 MB in the beginning and 651.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:18:27,648 INFO L168 Benchmark]: Boogie Preprocessor took 18.13 ms. Allocated memory is still 690.0 MB. Free memory was 651.7 MB in the beginning and 650.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:18:27,648 INFO L168 Benchmark]: RCFGBuilder took 242.85 ms. Allocated memory is still 690.0 MB. Free memory was 650.7 MB in the beginning and 634.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 50.3 GB. [2020-07-01 13:18:27,649 INFO L168 Benchmark]: BlockEncodingV2 took 81.53 ms. Allocated memory is still 690.0 MB. Free memory was 634.7 MB in the beginning and 629.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:18:27,649 INFO L168 Benchmark]: TraceAbstraction took 167.05 ms. Allocated memory is still 690.0 MB. Free memory was 628.3 MB in the beginning and 617.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 50.3 GB. [2020-07-01 13:18:27,650 INFO L168 Benchmark]: BuchiAutomizer took 3666.87 ms. Allocated memory was 690.0 MB in the beginning and 755.5 MB in the end (delta: 65.5 MB). Free memory was 617.4 MB in the beginning and 587.4 MB in the end (delta: 30.0 MB). Peak memory consumption was 238.6 MB. Max. memory is 50.3 GB. [2020-07-01 13:18:27,653 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 17 locations, 22 edges - StatisticsResult: Encoded RCFG 12 locations, 18 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 300.96 ms. Allocated memory was 649.6 MB in the beginning and 690.0 MB in the end (delta: 40.4 MB). Free memory was 562.8 MB in the beginning and 653.9 MB in the end (delta: -91.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.03 ms. Allocated memory is still 690.0 MB. Free memory was 652.8 MB in the beginning and 651.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.13 ms. Allocated memory is still 690.0 MB. Free memory was 651.7 MB in the beginning and 650.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 242.85 ms. Allocated memory is still 690.0 MB. Free memory was 650.7 MB in the beginning and 634.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 81.53 ms. Allocated memory is still 690.0 MB. Free memory was 634.7 MB in the beginning and 629.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 167.05 ms. Allocated memory is still 690.0 MB. Free memory was 628.3 MB in the beginning and 617.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 3666.87 ms. Allocated memory was 690.0 MB in the beginning and 755.5 MB in the end (delta: 65.5 MB). Free memory was 617.4 MB in the beginning and 587.4 MB in the end (delta: 30.0 MB). Peak memory consumption was 238.6 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 5 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 0 deterministic, 1 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 47 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 47 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 39 SDtfs, 52 SDslu, 59 SDs, 0 SdLazy, 79 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf92 smp100 dnf100 smp100 tf108 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 25 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {\result=0, \result=0, \old(m)=0, \old(n)=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7877c3ac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@681627d0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b8ca9b3=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22866bb4=0, r=0, n=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@185bf0d9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48e82b9d=0, y=0, m=0} State at position 1 is {\result=0, \result=0, \old(m)=4, \old(n)=-7, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7877c3ac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@681627d0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b8ca9b3=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22866bb4=0, r=0, n=-7, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@185bf0d9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48e82b9d=0, y=0, m=4} For i>1, the state at position i is {\result=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, \old(m)=4 + sum_{k=0}^i 0, \old(n)=-7 + sum_{k=0}^i -1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7877c3ac=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@681627d0=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b8ca9b3=0 + sum_{k=0}^i 0, NULL=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22866bb4=0 + sum_{k=0}^i 0, r=0 + sum_{k=0}^i 0, n=-7 + sum_{k=0}^i -1, x=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@185bf0d9=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48e82b9d=0 + sum_{k=0}^i 0, y=0 + sum_{k=0}^i 0, m=4 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [1, 2, 0] Mus: [0, 0] - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L18] int x = __VERIFIER_nondet_int(); [L19] int y = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) [L23] CALL Ack(x, y) [L12] COND FALSE !(m == 0) [L13] COND FALSE !(n == 0) Loop: [L14] CALL Ack(m, n-1) [L12] COND FALSE !(m == 0) [L13] COND FALSE !(n == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 13:18:19.853 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_vuh26K/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 13:18:27.890 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check