/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:35:38,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:35:38,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:35:38,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:35:38,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:35:38,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:35:38,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:35:38,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:35:38,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:35:38,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:35:38,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:35:38,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:35:38,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:35:38,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:35:38,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:35:38,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:35:38,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:35:38,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:35:38,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:35:38,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:35:38,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:35:38,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:35:38,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:35:38,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:35:38,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:35:38,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:35:38,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:35:38,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:35:38,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:35:38,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:35:38,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:35:38,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:35:38,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:35:38,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:35:38,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:35:38,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:35:38,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:35:38,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:35:38,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:35:38,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:35:38,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:35:38,145 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:35:38,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:35:38,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:35:38,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:35:38,161 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:35:38,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:35:38,161 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:35:38,161 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:35:38,161 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:35:38,161 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:35:38,162 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:35:38,162 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:35:38,162 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:35:38,162 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:35:38,162 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:35:38,162 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:38,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:35:38,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:35:38,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:35:38,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:35:38,163 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:35:38,163 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:35:38,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:35:38,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:35:38,164 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:35:38,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:35:38,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:35:38,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:35:38,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:35:38,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:35:38,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:35:38,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:35:38,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:35:38,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:35:38,345 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:35:38,346 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:35:38,524 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_vpcL4t/tmp/57a7559c2f384ad1b3ddcb492897591d/FLAG2fa0b5161 [2020-07-01 10:35:39,467 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:35:39,468 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:35:39,764 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_vpcL4t/tmp/57a7559c2f384ad1b3ddcb492897591d/FLAG2fa0b5161 [2020-07-01 10:35:40,277 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_vpcL4t/tmp/57a7559c2f384ad1b3ddcb492897591d [2020-07-01 10:35:40,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:35:40,290 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:35:40,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:35:40,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:35:40,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:35:40,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df91026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40, skipping insertion in model container [2020-07-01 10:35:40,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:35:40,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:35:40,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:35:40,553 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:35:40,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:35:40,594 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:35:40,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40 WrapperNode [2020-07-01 10:35:40,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:35:40,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:35:40,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:35:40,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:35:40,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:35:40,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:35:40,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:35:40,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:35:40,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:35:40,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:35:40,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:35:40,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:35:40,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 10:35:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-01 10:35:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:35:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:35:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-01 10:35:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-01 10:35:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-01 10:35:40,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:35:40,937 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:35:40,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:35:40 BoogieIcfgContainer [2020-07-01 10:35:40,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:35:40,941 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:35:40,941 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:35:40,943 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:35:40,944 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:35:40" (1/1) ... [2020-07-01 10:35:40,956 INFO L313 BlockEncoder]: Initial Icfg 21 locations, 22 edges [2020-07-01 10:35:40,958 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:35:40,958 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:35:40,959 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:35:40,959 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:35:40,961 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:35:40,962 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:35:40,962 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:35:40,981 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:35:41,000 INFO L200 BlockEncoder]: SBE split 9 edges [2020-07-01 10:35:41,005 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:35:41,006 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:35:41,030 INFO L100 BaseMinimizeStates]: Removed 10 edges and 5 locations by large block encoding [2020-07-01 10:35:41,033 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 10:35:41,035 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:35:41,035 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:35:41,043 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 10:35:41,044 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:35:41,044 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:35:41,044 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:35:41,044 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:35:41,045 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:35:41,045 INFO L313 BlockEncoder]: Encoded RCFG 14 locations, 23 edges [2020-07-01 10:35:41,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:35:41 BasicIcfg [2020-07-01 10:35:41,046 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:35:41,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:35:41,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:35:41,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:35:41,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:35:40" (1/4) ... [2020-07-01 10:35:41,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4965cfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:35:41, skipping insertion in model container [2020-07-01 10:35:41,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (2/4) ... [2020-07-01 10:35:41,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4965cfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:35:41, skipping insertion in model container [2020-07-01 10:35:41,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:35:40" (3/4) ... [2020-07-01 10:35:41,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4965cfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:35:41, skipping insertion in model container [2020-07-01 10:35:41,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:35:41" (4/4) ... [2020-07-01 10:35:41,054 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:35:41,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:35:41,072 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-07-01 10:35:41,086 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-07-01 10:35:41,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:35:41,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:35:41,110 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:35:41,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:35:41,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:35:41,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:35:41,110 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:35:41,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:35:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-01 10:35:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-01 10:35:41,131 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:35:41,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-01 10:35:41,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:35:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:41,139 INFO L82 PathProgramCache]: Analyzing trace with hash 75118, now seen corresponding path program 1 times [2020-07-01 10:35:41,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:41,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054178599] [2020-07-01 10:35:41,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:41,294 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 10:35:41,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054178599] [2020-07-01 10:35:41,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:35:41,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:35:41,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020794270] [2020-07-01 10:35:41,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:35:41,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:35:41,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:35:41,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:35:41,319 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-07-01 10:35:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:35:41,390 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2020-07-01 10:35:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:35:41,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-01 10:35:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:35:41,404 INFO L225 Difference]: With dead ends: 26 [2020-07-01 10:35:41,404 INFO L226 Difference]: Without dead ends: 14 [2020-07-01 10:35:41,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:35:41,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-01 10:35:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-01 10:35:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 10:35:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 22 transitions. [2020-07-01 10:35:41,442 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 22 transitions. Word has length 3 [2020-07-01 10:35:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:35:41,442 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 22 transitions. [2020-07-01 10:35:41,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:35:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 22 transitions. [2020-07-01 10:35:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-01 10:35:41,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:35:41,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-01 10:35:41,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-01 10:35:41,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:35:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash 75149, now seen corresponding path program 1 times [2020-07-01 10:35:41,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:41,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441592321] [2020-07-01 10:35:41,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:41,483 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 10:35:41,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441592321] [2020-07-01 10:35:41,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:35:41,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:35:41,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610665232] [2020-07-01 10:35:41,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:35:41,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:35:41,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:35:41,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:35:41,487 INFO L87 Difference]: Start difference. First operand 14 states and 22 transitions. Second operand 3 states. [2020-07-01 10:35:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:35:41,531 INFO L93 Difference]: Finished difference Result 14 states and 22 transitions. [2020-07-01 10:35:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:35:41,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-01 10:35:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:35:41,532 INFO L225 Difference]: With dead ends: 14 [2020-07-01 10:35:41,532 INFO L226 Difference]: Without dead ends: 10 [2020-07-01 10:35:41,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:35:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-01 10:35:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-01 10:35:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 10:35:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2020-07-01 10:35:41,536 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 3 [2020-07-01 10:35:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:35:41,537 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-07-01 10:35:41,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:35:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2020-07-01 10:35:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-01 10:35:41,537 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:35:41,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-01 10:35:41,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-01 10:35:41,538 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:35:41,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:41,538 INFO L82 PathProgramCache]: Analyzing trace with hash 75151, now seen corresponding path program 1 times [2020-07-01 10:35:41,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:41,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54617173] [2020-07-01 10:35:41,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:41,558 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 10:35:41,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54617173] [2020-07-01 10:35:41,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:35:41,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:35:41,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291591552] [2020-07-01 10:35:41,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:35:41,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:35:41,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:35:41,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:35:41,560 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 3 states. [2020-07-01 10:35:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:35:41,584 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-01 10:35:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:35:41,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-01 10:35:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:35:41,585 INFO L225 Difference]: With dead ends: 14 [2020-07-01 10:35:41,585 INFO L226 Difference]: Without dead ends: 10 [2020-07-01 10:35:41,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:35:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-01 10:35:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-01 10:35:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 10:35:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-07-01 10:35:41,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3 [2020-07-01 10:35:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:35:41,588 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-07-01 10:35:41,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:35:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-07-01 10:35:41,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-01 10:35:41,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:35:41,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-01 10:35:41,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-01 10:35:41,589 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:35:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:41,590 INFO L82 PathProgramCache]: Analyzing trace with hash 75152, now seen corresponding path program 1 times [2020-07-01 10:35:41,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:41,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335795774] [2020-07-01 10:35:41,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:41,617 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 10:35:41,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335795774] [2020-07-01 10:35:41,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:35:41,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:35:41,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623648860] [2020-07-01 10:35:41,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:35:41,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:35:41,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:35:41,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:35:41,620 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-07-01 10:35:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:35:41,647 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-07-01 10:35:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:35:41,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-07-01 10:35:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:35:41,648 INFO L225 Difference]: With dead ends: 10 [2020-07-01 10:35:41,648 INFO L226 Difference]: Without dead ends: 0 [2020-07-01 10:35:41,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:35:41,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-01 10:35:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-01 10:35:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-01 10:35:41,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 10:35:41,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2020-07-01 10:35:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:35:41,650 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:35:41,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:35:41,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:35:41,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:35:41,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-01 10:35:41,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-01 10:35:41,676 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-01 10:35:41,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:35:41,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr6REQUIRES_VIOLATION(line 12) no Hoare annotation was computed. [2020-07-01 10:35:41,677 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr5REQUIRES_VIOLATION(line 11) no Hoare annotation was computed. [2020-07-01 10:35:41,677 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-07-01 10:35:41,677 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-01 10:35:41,677 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-01 10:35:41,677 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr7REQUIRES_VIOLATION(line 12) no Hoare annotation was computed. [2020-07-01 10:35:41,677 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr2REQUIRES_VIOLATION(line 11) no Hoare annotation was computed. [2020-07-01 10:35:41,677 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr1REQUIRES_VIOLATION(line 10) no Hoare annotation was computed. [2020-07-01 10:35:41,678 INFO L264 CegarLoopResult]: At program point L10-3(lines 10 13) the Hoare annotation is: (and (= 1 (select |#valid| |ULTIMATE.start_main_~#a~0.base|)) (= 0 |ULTIMATE.start_main_~#a~0.offset|) (<= 1 |#StackHeapBarrier|) (= 4192 (select |#length| |ULTIMATE.start_main_~#a~0.base|))) [2020-07-01 10:35:41,678 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr4REQUIRES_VIOLATION(line 11) no Hoare annotation was computed. [2020-07-01 10:35:41,678 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr3REQUIRES_VIOLATION(line 11) no Hoare annotation was computed. [2020-07-01 10:35:41,678 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0REQUIRES_VIOLATION(line 10) no Hoare annotation was computed. [2020-07-01 10:35:41,681 INFO L308 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-07-01 10:35:41,689 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 10:35:41,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-07-01 10:35:41,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 10:35:41,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-07-01 10:35:41,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:35:41 BasicIcfg [2020-07-01 10:35:41,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:35:41,698 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:35:41,698 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:35:41,702 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:35:41,702 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:41,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:35:40" (1/5) ... [2020-07-01 10:35:41,703 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b33fd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:35:41, skipping insertion in model container [2020-07-01 10:35:41,703 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:41,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:40" (2/5) ... [2020-07-01 10:35:41,704 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b33fd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:35:41, skipping insertion in model container [2020-07-01 10:35:41,704 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:41,704 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:35:40" (3/5) ... [2020-07-01 10:35:41,704 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b33fd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:35:41, skipping insertion in model container [2020-07-01 10:35:41,704 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:41,705 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:35:41" (4/5) ... [2020-07-01 10:35:41,705 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b33fd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:35:41, skipping insertion in model container [2020-07-01 10:35:41,705 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:41,705 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:35:41" (5/5) ... [2020-07-01 10:35:41,707 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:35:41,730 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:35:41,730 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:35:41,730 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:35:41,730 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:35:41,730 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:35:41,731 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:35:41,731 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:35:41,731 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:35:41,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-07-01 10:35:41,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:35:41,739 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:35:41,739 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:35:41,744 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:35:41,744 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:35:41,744 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:35:41,744 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-07-01 10:35:41,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:35:41,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:35:41,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:35:41,746 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:35:41,746 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:35:41,751 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue [45] ULTIMATE.startENTRY-->L-1: Formula: (and (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= |v_#valid_1| (store |v_#valid_2| 0 0)) (= |v_#NULL.offset_1| 0)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_2|} OutVars{#NULL.offset=|v_#NULL.offset_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #NULL.base=|v_#NULL.base_1|, #valid=|v_#valid_1|} AuxVars[] AssignedVars[#valid, #NULL.offset, #NULL.base] 9#L-1true [66] L-1-->L10-3: Formula: (and (= (store |v_#valid_4| |v_ULTIMATE.start_main_~#a~0.base_1| 1) |v_#valid_3|) (= (store |v_#length_2| |v_ULTIMATE.start_main_~#a~0.base_1| 4192) |v_#length_1|) (= 0 |v_ULTIMATE.start_main_~#a~0.offset_1|) (< 0 |v_ULTIMATE.start_main_~#a~0.base_1|) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_~#a~0.base_1|) (= 0 (select |v_#valid_4| |v_ULTIMATE.start_main_~#a~0.base_1|))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_2|, #valid=|v_#valid_4|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_2|, ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_1|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, #valid=|v_#valid_3|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_1|, #length=|v_#length_1|, ULTIMATE.start_main_#t~mem0=|v_ULTIMATE.start_main_#t~mem0_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#a~0.offset, ULTIMATE.start_main_~#a~0.base, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet2, #valid, ULTIMATE.start_main_#t~mem1, #length, ULTIMATE.start_main_#t~mem0] 5#L10-3true [2020-07-01 10:35:41,752 INFO L796 eck$LassoCheckResult]: Loop: 5#L10-3true [88] L10-3-->L11: Formula: (let ((.cse0 (+ |v_ULTIMATE.start_main_~#a~0.offset_19| 8))) (and (<= (+ |v_ULTIMATE.start_main_~#a~0.offset_19| 12) (select |v_#length_13| |v_ULTIMATE.start_main_~#a~0.base_26|)) (<= 0 .cse0) (<= 0 (select (select |v_#memory_int_11| |v_ULTIMATE.start_main_~#a~0.base_26|) .cse0)) (= 1 (select |v_#valid_23| |v_ULTIMATE.start_main_~#a~0.base_26|)))) InVars {ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_19|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_26|, #valid=|v_#valid_23|, #memory_int=|v_#memory_int_11|, #length=|v_#length_13|} OutVars{ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_19|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_26|, #valid=|v_#valid_23|, #memory_int=|v_#memory_int_11|, ULTIMATE.start_main_#t~mem0=|v_ULTIMATE.start_main_#t~mem0_13|, #length=|v_#length_13|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~mem0] 14#L11true [46] L11-->L11-1: Formula: (let ((.cse0 (+ |v_ULTIMATE.start_main_~#a~0.offset_6| 8))) (and (= 1 (select |v_#valid_7| |v_ULTIMATE.start_main_~#a~0.base_7|)) (<= 0 .cse0) (= |v_ULTIMATE.start_main_#t~mem1_2| (select (select |v_#memory_int_2| |v_ULTIMATE.start_main_~#a~0.base_7|) .cse0)) (<= (+ |v_ULTIMATE.start_main_~#a~0.offset_6| 12) (select |v_#length_5| |v_ULTIMATE.start_main_~#a~0.base_7|)))) InVars {#memory_int=|v_#memory_int_2|, ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_6|, #length=|v_#length_5|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_7|, #valid=|v_#valid_7|} OutVars{ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_6|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_7|, #valid=|v_#valid_7|, #memory_int=|v_#memory_int_2|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_2|, #length=|v_#length_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~mem1] 11#L11-1true [85] L11-1-->L12: Formula: (let ((.cse0 (+ |v_ULTIMATE.start_main_~#a~0.offset_16| 8))) (and (<= (+ |v_ULTIMATE.start_main_~#a~0.offset_16| 12) (select |v_#length_11| |v_ULTIMATE.start_main_~#a~0.base_22|)) (= 1 (select |v_#valid_19| |v_ULTIMATE.start_main_~#a~0.base_22|)) (<= 0 .cse0) (= |v_#memory_int_7| (store |v_#memory_int_8| |v_ULTIMATE.start_main_~#a~0.base_22| (store (select |v_#memory_int_8| |v_ULTIMATE.start_main_~#a~0.base_22|) .cse0 (+ |v_ULTIMATE.start_main_#t~mem1_6| (- 1))))))) InVars {ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_16|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_22|, #valid=|v_#valid_19|, #memory_int=|v_#memory_int_8|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_6|, #length=|v_#length_11|} OutVars{ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_16|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_22|, #valid=|v_#valid_19|, #memory_int=|v_#memory_int_7|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_5|, #length=|v_#length_11|} AuxVars[] AssignedVars[#memory_int, ULTIMATE.start_main_#t~mem1] 16#L12true [87] L12-->L10-3: Formula: (let ((.cse0 (+ |v_ULTIMATE.start_main_~#a~0.offset_18| 8))) (and (<= 0 .cse0) (= 1 (select |v_#valid_22| |v_ULTIMATE.start_main_~#a~0.base_25|)) (= |v_#memory_int_9| (store |v_#memory_int_10| |v_ULTIMATE.start_main_~#a~0.base_25| (store (select |v_#memory_int_10| |v_ULTIMATE.start_main_~#a~0.base_25|) .cse0 |v_ULTIMATE.start_main_#t~nondet2_5|))) (<= (+ |v_ULTIMATE.start_main_~#a~0.offset_18| 12) (select |v_#length_12| |v_ULTIMATE.start_main_~#a~0.base_25|)))) InVars {ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_18|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_25|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, #valid=|v_#valid_22|, #memory_int=|v_#memory_int_10|, #length=|v_#length_12|} OutVars{ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_18|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_25|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, #valid=|v_#valid_22|, #memory_int=|v_#memory_int_9|, #length=|v_#length_12|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, #memory_int] 5#L10-3true [2020-07-01 10:35:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:41,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2422, now seen corresponding path program 1 times [2020-07-01 10:35:41,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:41,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054863420] [2020-07-01 10:35:41,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:41,787 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash 3592057, now seen corresponding path program 1 times [2020-07-01 10:35:41,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:41,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226390721] [2020-07-01 10:35:41,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:41,804 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:41,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2055530898, now seen corresponding path program 1 times [2020-07-01 10:35:41,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:41,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276053839] [2020-07-01 10:35:41,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:41,830 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:41,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:35:41 BasicIcfg [2020-07-01 10:35:41,991 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:35:41,994 INFO L168 Benchmark]: Toolchain (without parser) took 1703.45 ms. Allocated memory was 514.9 MB in the beginning and 552.1 MB in the end (delta: 37.2 MB). Free memory was 439.3 MB in the beginning and 410.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 66.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:41,995 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:35:41,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.49 ms. Allocated memory was 514.9 MB in the beginning and 552.1 MB in the end (delta: 37.2 MB). Free memory was 439.3 MB in the beginning and 520.1 MB in the end (delta: -80.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:41,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.00 ms. Allocated memory is still 552.1 MB. Free memory was 519.4 MB in the beginning and 518.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:41,997 INFO L168 Benchmark]: Boogie Preprocessor took 24.32 ms. Allocated memory is still 552.1 MB. Free memory was 518.1 MB in the beginning and 516.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:41,997 INFO L168 Benchmark]: RCFGBuilder took 282.12 ms. Allocated memory is still 552.1 MB. Free memory was 516.7 MB in the beginning and 501.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:41,998 INFO L168 Benchmark]: BlockEncodingV2 took 105.00 ms. Allocated memory is still 552.1 MB. Free memory was 501.0 MB in the beginning and 492.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:41,998 INFO L168 Benchmark]: TraceAbstraction took 650.45 ms. Allocated memory is still 552.1 MB. Free memory was 492.3 MB in the beginning and 439.3 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:41,999 INFO L168 Benchmark]: BuchiAutomizer took 293.22 ms. Allocated memory is still 552.1 MB. Free memory was 439.3 MB in the beginning and 410.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:42,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 21 locations, 22 edges - StatisticsResult: Encoded RCFG 14 locations, 23 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 304.49 ms. Allocated memory was 514.9 MB in the beginning and 552.1 MB in the end (delta: 37.2 MB). Free memory was 439.3 MB in the beginning and 520.1 MB in the end (delta: -80.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 38.00 ms. Allocated memory is still 552.1 MB. Free memory was 519.4 MB in the beginning and 518.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 24.32 ms. Allocated memory is still 552.1 MB. Free memory was 518.1 MB in the beginning and 516.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * RCFGBuilder took 282.12 ms. Allocated memory is still 552.1 MB. Free memory was 516.7 MB in the beginning and 501.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 105.00 ms. Allocated memory is still 552.1 MB. Free memory was 501.0 MB in the beginning and 492.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 650.45 ms. Allocated memory is still 552.1 MB. Free memory was 492.3 MB in the beginning and 439.3 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 293.22 ms. Allocated memory is still 552.1 MB. Free memory was 439.3 MB in the beginning and 410.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant [2020-07-01 10:35:42,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 10:35:42,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-07-01 10:35:42,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 10:35:42,013 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((1 == \valid[a] && 0 == a) && 1 <= unknown-#StackHeapBarrier-unknown) && 4192 == unknown-#length-unknown[a] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 45 SDslu, 2 SDs, 0 SdLazy, 45 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 17 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@1c7c5379=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@afe3e7e=0, NULL=0, \result=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b39249e=23611, NULL=1, a=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L9] int a[1048]; Loop: [L10] EXPR a[2] [L10] COND TRUE a[2] >= 0 [L11] EXPR a[2] [L11] a[2] = a[2] - 1 [L12] a[1+1] = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 10:35:35.914 ----------------------------------------------- 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/sandbox2/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/sandbox2/tmp/BenchExec_run_vpcL4t/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:35:42.241 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check