/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:37:22,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:37:22,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:37:22,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:37:22,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:37:22,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:37:22,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:37:22,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:37:22,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:37:22,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:37:22,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:37:22,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:37:22,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:37:22,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:37:22,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:37:22,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:37:22,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:37:22,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:37:22,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:37:22,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:37:22,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:37:22,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:37:22,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:37:22,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:37:22,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:37:22,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:37:22,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:37:22,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:37:22,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:37:22,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:37:22,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:37:22,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:37:22,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:37:22,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:37:22,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:37:22,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:37:22,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:37:22,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:37:22,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:37:22,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:37:22,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:37:22,620 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:37:22,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:37:22,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:37:22,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:37:22,635 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:37:22,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:37:22,635 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:37:22,636 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:37:22,636 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:37:22,636 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:37:22,636 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:37:22,636 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:37:22,636 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:37:22,637 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:37:22,637 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:37:22,637 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:37:22,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:37:22,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:37:22,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:37:22,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:37:22,638 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:37:22,638 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:37:22,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:37:22,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:37:22,638 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:37:22,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:37:22,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:37:22,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:37:22,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:37:22,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:37:22,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:37:22,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:37:22,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:37:22,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:37:22,821 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:37:22,822 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:37:22,924 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_UgcE0k/tmp/811438b3d1304af8911aca8d8feff21d/FLAGfdcc5c67f [2020-07-01 10:37:23,258 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:37:23,259 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:37:23,266 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_UgcE0k/tmp/811438b3d1304af8911aca8d8feff21d/FLAGfdcc5c67f [2020-07-01 10:37:23,836 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_UgcE0k/tmp/811438b3d1304af8911aca8d8feff21d [2020-07-01 10:37:23,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:37:23,848 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:37:23,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:37:23,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:37:23,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:37:23,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:37:23" (1/1) ... [2020-07-01 10:37:23,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe54168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:23, skipping insertion in model container [2020-07-01 10:37:23,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:37:23" (1/1) ... [2020-07-01 10:37:23,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:37:23,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:37:24,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:37:24,107 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:37:24,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:37:24,146 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:37:24,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24 WrapperNode [2020-07-01 10:37:24,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:37:24,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:37:24,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:37:24,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:37:24,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:37:24,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:37:24,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:37:24,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:37:24,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:37:24,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:37:24,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:37:24,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:37:24,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (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 10:37:24,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:37:24,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:37:24,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-01 10:37:24,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-01 10:37:24,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-01 10:37:24,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:37:24,470 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:37:24,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:37:24 BoogieIcfgContainer [2020-07-01 10:37:24,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:37:24,475 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:37:24,475 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:37:24,477 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:37:24,478 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:37:24" (1/1) ... [2020-07-01 10:37:24,491 INFO L313 BlockEncoder]: Initial Icfg 18 locations, 22 edges [2020-07-01 10:37:24,493 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:37:24,494 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:37:24,494 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:37:24,495 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:37:24,497 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:37:24,498 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:37:24,498 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:37:24,516 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:37:24,537 INFO L200 BlockEncoder]: SBE split 8 edges [2020-07-01 10:37:24,541 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:37:24,543 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:37:24,555 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 10:37:24,557 INFO L70 RemoveSinkStates]: Removed 5 edges and 2 locations by removing sink states [2020-07-01 10:37:24,558 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:37:24,558 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:37:24,559 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:37:24,559 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:37:24,560 INFO L313 BlockEncoder]: Encoded RCFG 14 locations, 24 edges [2020-07-01 10:37:24,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:37:24 BasicIcfg [2020-07-01 10:37:24,560 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:37:24,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:37:24,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:37:24,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:37:24,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:37:23" (1/4) ... [2020-07-01 10:37:24,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d72aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:37:24, skipping insertion in model container [2020-07-01 10:37:24,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (2/4) ... [2020-07-01 10:37:24,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d72aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:37:24, skipping insertion in model container [2020-07-01 10:37:24,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:37:24" (3/4) ... [2020-07-01 10:37:24,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d72aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:37:24, skipping insertion in model container [2020-07-01 10:37:24,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:37:24" (4/4) ... [2020-07-01 10:37:24,569 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:37:24,580 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:37:24,587 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-01 10:37:24,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-01 10:37:24,628 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:37:24,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:37:24,628 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:37:24,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:37:24,629 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:37:24,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:37:24,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:37:24,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:37:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-01 10:37:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 10:37:24,650 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:37:24,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 10:37:24,651 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:37:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:24,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2607335, now seen corresponding path program 1 times [2020-07-01 10:37:24,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:37:24,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721027338] [2020-07-01 10:37:24,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:37:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:24,814 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 10:37:24,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721027338] [2020-07-01 10:37:24,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:37:24,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:37:24,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753089461] [2020-07-01 10:37:24,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:37:24,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:37:24,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:37:24,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:37:24,840 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-07-01 10:37:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:37:24,905 INFO L93 Difference]: Finished difference Result 26 states and 45 transitions. [2020-07-01 10:37:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:37:24,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-01 10:37:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:37:24,919 INFO L225 Difference]: With dead ends: 26 [2020-07-01 10:37:24,919 INFO L226 Difference]: Without dead ends: 11 [2020-07-01 10:37:24,922 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 10:37:24,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-01 10:37:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-01 10:37:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-01 10:37:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-07-01 10:37:24,955 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 16 transitions. Word has length 4 [2020-07-01 10:37:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:37:24,955 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-07-01 10:37:24,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:37:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 16 transitions. [2020-07-01 10:37:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 10:37:24,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:37:24,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 10:37:24,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-01 10:37:24,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:37:24,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:24,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2608296, now seen corresponding path program 1 times [2020-07-01 10:37:24,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:37:24,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053731187] [2020-07-01 10:37:24,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:37:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:24,995 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 10:37:24,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053731187] [2020-07-01 10:37:24,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:37:24,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:37:24,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239437885] [2020-07-01 10:37:24,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:37:24,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:37:24,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:37:24,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:37:24,999 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 3 states. [2020-07-01 10:37:25,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:37:25,025 INFO L93 Difference]: Finished difference Result 11 states and 16 transitions. [2020-07-01 10:37:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:37:25,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-01 10:37:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:37:25,026 INFO L225 Difference]: With dead ends: 11 [2020-07-01 10:37:25,026 INFO L226 Difference]: Without dead ends: 9 [2020-07-01 10:37:25,027 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 10:37:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-07-01 10:37:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-07-01 10:37:25,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 10:37:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2020-07-01 10:37:25,029 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 12 transitions. Word has length 4 [2020-07-01 10:37:25,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:37:25,030 INFO L479 AbstractCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-07-01 10:37:25,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:37:25,030 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2020-07-01 10:37:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 10:37:25,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:37:25,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 10:37:25,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-01 10:37:25,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:37:25,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:25,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2608298, now seen corresponding path program 1 times [2020-07-01 10:37:25,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:37:25,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293104565] [2020-07-01 10:37:25,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:37:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:25,054 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 10:37:25,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293104565] [2020-07-01 10:37:25,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:37:25,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:37:25,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610248524] [2020-07-01 10:37:25,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:37:25,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:37:25,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:37:25,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:37:25,056 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand 3 states. [2020-07-01 10:37:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:37:25,069 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-07-01 10:37:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:37:25,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-01 10:37:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:37:25,071 INFO L225 Difference]: With dead ends: 10 [2020-07-01 10:37:25,071 INFO L226 Difference]: Without dead ends: 9 [2020-07-01 10:37:25,071 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 10:37:25,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-07-01 10:37:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-07-01 10:37:25,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 10:37:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2020-07-01 10:37:25,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 4 [2020-07-01 10:37:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:37:25,074 INFO L479 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-07-01 10:37:25,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:37:25,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2020-07-01 10:37:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-01 10:37:25,074 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:37:25,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-01 10:37:25,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-01 10:37:25,075 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:37:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:25,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2608299, now seen corresponding path program 1 times [2020-07-01 10:37:25,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:37:25,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541722597] [2020-07-01 10:37:25,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:37:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:25,115 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 10:37:25,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541722597] [2020-07-01 10:37:25,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:37:25,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:37:25,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736722556] [2020-07-01 10:37:25,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-01 10:37:25,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:37:25,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:37:25,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:37:25,117 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 3 states. [2020-07-01 10:37:25,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:37:25,131 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2020-07-01 10:37:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:37:25,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-01 10:37:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:37:25,132 INFO L225 Difference]: With dead ends: 9 [2020-07-01 10:37:25,132 INFO L226 Difference]: Without dead ends: 8 [2020-07-01 10:37:25,133 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 10:37:25,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-07-01 10:37:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-07-01 10:37:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 10:37:25,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2020-07-01 10:37:25,135 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 4 [2020-07-01 10:37:25,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:37:25,135 INFO L479 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-07-01 10:37:25,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-01 10:37:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2020-07-01 10:37:25,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 10:37:25,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:37:25,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:37:25,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-01 10:37:25,136 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:37:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:25,137 INFO L82 PathProgramCache]: Analyzing trace with hash 393374827, now seen corresponding path program 1 times [2020-07-01 10:37:25,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:37:25,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496402878] [2020-07-01 10:37:25,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:37:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:25,192 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 10:37:25,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496402878] [2020-07-01 10:37:25,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:37:25,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:37:25,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260273407] [2020-07-01 10:37:25,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-01 10:37:25,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:37:25,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:37:25,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:37:25,194 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 4 states. [2020-07-01 10:37:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:37:25,215 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-07-01 10:37:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:37:25,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-07-01 10:37:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:37:25,216 INFO L225 Difference]: With dead ends: 9 [2020-07-01 10:37:25,216 INFO L226 Difference]: Without dead ends: 8 [2020-07-01 10:37:25,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:37:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-07-01 10:37:25,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-07-01 10:37:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 10:37:25,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-07-01 10:37:25,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 7 [2020-07-01 10:37:25,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:37:25,219 INFO L479 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-07-01 10:37:25,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-01 10:37:25,219 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-07-01 10:37:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-01 10:37:25,219 INFO L414 BasicCegarLoop]: Found error trace [2020-07-01 10:37:25,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:37:25,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-01 10:37:25,220 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-07-01 10:37:25,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:25,220 INFO L82 PathProgramCache]: Analyzing trace with hash 393374828, now seen corresponding path program 1 times [2020-07-01 10:37:25,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:37:25,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475021195] [2020-07-01 10:37:25,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:37:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:25,258 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 10:37:25,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475021195] [2020-07-01 10:37:25,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:37:25,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:37:25,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004217214] [2020-07-01 10:37:25,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-01 10:37:25,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:37:25,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:37:25,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:37:25,260 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2020-07-01 10:37:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:37:25,272 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2020-07-01 10:37:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:37:25,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-07-01 10:37:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-01 10:37:25,273 INFO L225 Difference]: With dead ends: 8 [2020-07-01 10:37:25,273 INFO L226 Difference]: Without dead ends: 0 [2020-07-01 10:37:25,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:37:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-01 10:37:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-01 10:37:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-01 10:37:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 10:37:25,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-07-01 10:37:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-01 10:37:25,275 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:37:25,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-01 10:37:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:37:25,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:37:25,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-01 10:37:25,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-01 10:37:25,290 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-01 10:37:25,291 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:37:25,291 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,291 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: (<= 1 |#StackHeapBarrier|) [2020-07-01 10:37:25,291 INFO L268 CegarLoopResult]: For program point L14(lines 14 21) no Hoare annotation was computed. [2020-07-01 10:37:25,291 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,292 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,292 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,292 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,292 INFO L268 CegarLoopResult]: For program point L15-6(lines 15 20) no Hoare annotation was computed. [2020-07-01 10:37:25,292 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr2REQUIRES_VIOLATION(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,292 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr1REQUIRES_VIOLATION(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,292 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr3REQUIRES_VIOLATION(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,292 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0REQUIRES_VIOLATION(line 15) no Hoare annotation was computed. [2020-07-01 10:37:25,295 INFO L308 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-07-01 10:37:25,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 10:37:25,308 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 10:37:25,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:37:25 BasicIcfg [2020-07-01 10:37:25,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:37:25,311 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:37:25,311 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:37:25,314 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:37:25,315 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:37:25,315 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:37:23" (1/5) ... [2020-07-01 10:37:25,315 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@504bede2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:37:25, skipping insertion in model container [2020-07-01 10:37:25,315 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:37:25,315 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:37:24" (2/5) ... [2020-07-01 10:37:25,316 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@504bede2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:37:25, skipping insertion in model container [2020-07-01 10:37:25,316 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:37:25,316 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:37:24" (3/5) ... [2020-07-01 10:37:25,316 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@504bede2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:37:25, skipping insertion in model container [2020-07-01 10:37:25,316 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:37:25,317 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:37:24" (4/5) ... [2020-07-01 10:37:25,317 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@504bede2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:37:25, skipping insertion in model container [2020-07-01 10:37:25,317 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:37:25,317 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:37:25" (5/5) ... [2020-07-01 10:37:25,318 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:37:25,340 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:37:25,340 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:37:25,340 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:37:25,341 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:37:25,341 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:37:25,341 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:37:25,341 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:37:25,341 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:37:25,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-07-01 10:37:25,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:37:25,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:37:25,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:37:25,355 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:37:25,355 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:37:25,355 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:37:25,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-07-01 10:37:25,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:37:25,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:37:25,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:37:25,357 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:37:25,357 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:37:25,363 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue [54] 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] 10#L-1true [77] L-1-->L14: Formula: (and (= (store |v_#valid_4| |v_ULTIMATE.start_main_~#a~0.base_1| 1) |v_#valid_3|) (= v_ULTIMATE.start_main_~k~0_1 |v_ULTIMATE.start_main_#t~nondet0_8|) (= (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{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_1, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~short3=|v_ULTIMATE.start_main_#t~short3_1|, #StackHeapBarrier=|v_#StackHeapBarrier_2|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, #valid=|v_#valid_3|, ULTIMATE.start_main_#t~mem2=|v_ULTIMATE.start_main_#t~mem2_1|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_1|, #length=|v_#length_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_8|] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~short3, ULTIMATE.start_main_~#a~0.offset, ULTIMATE.start_main_~#a~0.base, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#res, #valid, ULTIMATE.start_main_#t~mem2, ULTIMATE.start_main_#t~mem1, #length, ULTIMATE.start_main_~x~0] 15#L14true [64] L14-->L15: Formula: (and (<= 0 v_ULTIMATE.start_main_~k~0_4) (< v_ULTIMATE.start_main_~k~0_4 1048)) InVars {ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_4} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_4} AuxVars[] AssignedVars[] 3#L15true [45] L15-->L15-1: Formula: (and (<= 0 |v_ULTIMATE.start_main_~#a~0.offset_4|) (= 1 (select |v_#valid_5| |v_ULTIMATE.start_main_~#a~0.base_4|)) (= |v_ULTIMATE.start_main_#t~mem1_3| (select (select |v_#memory_int_1| |v_ULTIMATE.start_main_~#a~0.base_4|) |v_ULTIMATE.start_main_~#a~0.offset_4|)) (<= (+ |v_ULTIMATE.start_main_~#a~0.offset_4| 4) (select |v_#length_3| |v_ULTIMATE.start_main_~#a~0.base_4|))) InVars {#memory_int=|v_#memory_int_1|, ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_4|, #length=|v_#length_3|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_4|, #valid=|v_#valid_5|} OutVars{ULTIMATE.start_main_~#a~0.offset=|v_ULTIMATE.start_main_~#a~0.offset_4|, ULTIMATE.start_main_~#a~0.base=|v_ULTIMATE.start_main_~#a~0.base_4|, #valid=|v_#valid_5|, #memory_int=|v_#memory_int_1|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_3|, #length=|v_#length_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~mem1] 16#L15-1true [86] L15-1-->L15-2: Formula: (and (not |v_ULTIMATE.start_main_#t~short3_4|) (< 23 |v_ULTIMATE.start_main_#t~mem1_4|)) InVars {ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_4|} OutVars{ULTIMATE.start_main_#t~short3=|v_ULTIMATE.start_main_#t~short3_4|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~short3] 14#L15-2true [62] L15-2-->L15-6: Formula: (not |v_ULTIMATE.start_main_#t~short3_7|) InVars {ULTIMATE.start_main_#t~short3=|v_ULTIMATE.start_main_#t~short3_7|} OutVars{ULTIMATE.start_main_#t~short3=|v_ULTIMATE.start_main_#t~short3_7|} AuxVars[] AssignedVars[] 8#L15-6true [51] L15-6-->L17-2: Formula: (and |v_ULTIMATE.start_main_#t~short3_9| (= v_ULTIMATE.start_main_~x~0_2 |v_ULTIMATE.start_main_#t~nondet4_3|)) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_3|, ULTIMATE.start_main_#t~short3=|v_ULTIMATE.start_main_#t~short3_9|} OutVars{ULTIMATE.start_main_#t~mem2=|v_ULTIMATE.start_main_#t~mem2_5|, ULTIMATE.start_main_#t~short3=|v_ULTIMATE.start_main_#t~short3_8|, ULTIMATE.start_main_#t~mem1=|v_ULTIMATE.start_main_#t~mem1_5|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~short3, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~mem2, ULTIMATE.start_main_#t~mem1, ULTIMATE.start_main_~x~0] 4#L17-2true [2020-07-01 10:37:25,363 INFO L796 eck$LassoCheckResult]: Loop: 4#L17-2true [50] L17-2-->L17-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (= v_ULTIMATE.start_main_~x~0_4 (+ (* v_ULTIMATE.start_main_~k~0_8 (- 1)) v_ULTIMATE.start_main_~x~0_5))) InVars {ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 4#L17-2true [2020-07-01 10:37:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash 393376742, now seen corresponding path program 1 times [2020-07-01 10:37:25,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:37:25,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041915204] [2020-07-01 10:37:25,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:37:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:25,389 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 10:37:25,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041915204] [2020-07-01 10:37:25,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:37:25,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:37:25,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322115101] [2020-07-01 10:37:25,391 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:37:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:25,391 INFO L82 PathProgramCache]: Analyzing trace with hash 81, now seen corresponding path program 1 times [2020-07-01 10:37:25,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:37:25,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44189833] [2020-07-01 10:37:25,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:37:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:37:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:37:25,416 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:37:25,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:37:25,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:37:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:37:25,439 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-07-01 10:37:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:37:25,478 INFO L93 Difference]: Finished difference Result 16 states and 25 transitions. [2020-07-01 10:37:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:37:25,481 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: unknown kind of automaton at de.uni_freiburg.informatik.ultimate.automata.AutomatonDefinitionPrinter.printAutomaton(AutomatonDefinitionPrinter.java:349) at de.uni_freiburg.informatik.ultimate.automata.AutomatonDefinitionPrinter.toString(AutomatonDefinitionPrinter.java:186) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.TermcompProofBenchmark.reportFiniteModule(TermcompProofBenchmark.java:61) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineFinite(BuchiCegarLoop.java:978) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:532) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:380) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-01 10:37:25,486 INFO L168 Benchmark]: Toolchain (without parser) took 1636.52 ms. Allocated memory was 649.6 MB in the beginning and 693.6 MB in the end (delta: 44.0 MB). Free memory was 556.3 MB in the beginning and 541.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:25,486 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:37:25,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.50 ms. Allocated memory was 649.6 MB in the beginning and 693.6 MB in the end (delta: 44.0 MB). Free memory was 556.3 MB in the beginning and 656.7 MB in the end (delta: -100.4 MB). Peak memory consumption was 28.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:25,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.61 ms. Allocated memory is still 693.6 MB. Free memory was 656.7 MB in the beginning and 655.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:25,488 INFO L168 Benchmark]: Boogie Preprocessor took 34.58 ms. Allocated memory is still 693.6 MB. Free memory was 655.4 MB in the beginning and 654.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:25,489 INFO L168 Benchmark]: RCFGBuilder took 255.05 ms. Allocated memory is still 693.6 MB. Free memory was 654.0 MB in the beginning and 634.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:25,489 INFO L168 Benchmark]: BlockEncodingV2 took 85.89 ms. Allocated memory is still 693.6 MB. Free memory was 634.6 MB in the beginning and 627.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:25,490 INFO L168 Benchmark]: TraceAbstraction took 748.36 ms. Allocated memory is still 693.6 MB. Free memory was 627.9 MB in the beginning and 560.4 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:25,491 INFO L168 Benchmark]: BuchiAutomizer took 172.46 ms. Allocated memory is still 693.6 MB. Free memory was 560.4 MB in the beginning and 541.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:25,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 18 locations, 22 edges - StatisticsResult: Encoded RCFG 14 locations, 24 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 297.50 ms. Allocated memory was 649.6 MB in the beginning and 693.6 MB in the end (delta: 44.0 MB). Free memory was 556.3 MB in the beginning and 656.7 MB in the end (delta: -100.4 MB). Peak memory consumption was 28.9 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.61 ms. Allocated memory is still 693.6 MB. Free memory was 656.7 MB in the beginning and 655.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 34.58 ms. Allocated memory is still 693.6 MB. Free memory was 655.4 MB in the beginning and 654.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 255.05 ms. Allocated memory is still 693.6 MB. Free memory was 654.0 MB in the beginning and 634.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 85.89 ms. Allocated memory is still 693.6 MB. Free memory was 634.6 MB in the beginning and 627.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 748.36 ms. Allocated memory is still 693.6 MB. Free memory was 627.9 MB in the beginning and 560.4 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 172.46 ms. Allocated memory is still 693.6 MB. Free memory was 560.4 MB in the beginning and 541.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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 #StackHeapBarrier * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant [2020-07-01 10:37:25,503 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-07-01 10:37:25,503 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: 1 <= unknown-#StackHeapBarrier-unknown - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 64 SDslu, 4 SDs, 0 SdLazy, 53 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 3 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, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 666 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: unknown kind of automaton de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: unknown kind of automaton: de.uni_freiburg.informatik.ultimate.automata.AutomatonDefinitionPrinter.printAutomaton(AutomatonDefinitionPrinter.java:349) RESULT: Ultimate could not prove your program: Toolchain returned no result. !SESSION 2020-07-01 10:37:20.330 ----------------------------------------------- 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_UgcE0k/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:37:25.728 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check