java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 18:37:07,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 18:37:07,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 18:37:07,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 18:37:07,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 18:37:07,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 18:37:07,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 18:37:07,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 18:37:07,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 18:37:07,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 18:37:07,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 18:37:07,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 18:37:07,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 18:37:07,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 18:37:07,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 18:37:07,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 18:37:07,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 18:37:07,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 18:37:07,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 18:37:07,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 18:37:07,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 18:37:07,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 18:37:07,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 18:37:07,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 18:37:07,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... 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[2019-10-02 18:37:07,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 18:37:07,687 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 18:37:07,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 18:37:07,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 18:37:07,689 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 18:37:07,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 18:37:07,690 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 18:37:07,690 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 18:37:07,690 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 18:37:07,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 18:37:07,691 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 18:37:07,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 18:37:07,693 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 18:37:07,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 18:37:07,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 18:37:07,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 18:37:07,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 18:37:07,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 18:37:07,695 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 18:37:07,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 18:37:07,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 18:37:07,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 18:37:07,696 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 18:37:07,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 18:37:07,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 18:37:07,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 18:37:07,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 18:37:07,697 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 18:37:07,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 18:37:07,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 18:37:07,697 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 18:37:07,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 18:37:07,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 18:37:07,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 18:37:07,782 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 18:37:07,783 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 18:37:07,784 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2019-10-02 18:37:07,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b769d9d7d/288392d375b54a38bdcc3b206ace79b7/FLAGebc26abdc [2019-10-02 18:37:08,430 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 18:37:08,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2019-10-02 18:37:08,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b769d9d7d/288392d375b54a38bdcc3b206ace79b7/FLAGebc26abdc [2019-10-02 18:37:08,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b769d9d7d/288392d375b54a38bdcc3b206ace79b7 [2019-10-02 18:37:08,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 18:37:08,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 18:37:08,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 18:37:08,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 18:37:08,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 18:37:08,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 06:37:08" (1/1) ... [2019-10-02 18:37:08,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b99afa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:08, skipping insertion in model container [2019-10-02 18:37:08,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 06:37:08" (1/1) ... [2019-10-02 18:37:08,757 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 18:37:08,803 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 18:37:09,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 18:37:09,312 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 18:37:09,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 18:37:09,430 INFO L192 MainTranslator]: Completed translation [2019-10-02 18:37:09,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09 WrapperNode [2019-10-02 18:37:09,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 18:37:09,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 18:37:09,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 18:37:09,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 18:37:09,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (1/1) ... [2019-10-02 18:37:09,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (1/1) ... [2019-10-02 18:37:09,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (1/1) ... [2019-10-02 18:37:09,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (1/1) ... [2019-10-02 18:37:09,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (1/1) ... [2019-10-02 18:37:09,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (1/1) ... [2019-10-02 18:37:09,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (1/1) ... [2019-10-02 18:37:09,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 18:37:09,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 18:37:09,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 18:37:09,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 18:37:09,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 18:37:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 18:37:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 18:37:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 18:37:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 18:37:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 18:37:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 18:37:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 18:37:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 18:37:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 18:37:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 18:37:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 18:37:10,880 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 18:37:10,880 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 18:37:10,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 06:37:10 BoogieIcfgContainer [2019-10-02 18:37:10,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 18:37:10,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 18:37:10,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 18:37:10,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 18:37:10,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 06:37:08" (1/3) ... [2019-10-02 18:37:10,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c1656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 06:37:10, skipping insertion in model container [2019-10-02 18:37:10,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:09" (2/3) ... [2019-10-02 18:37:10,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c1656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 06:37:10, skipping insertion in model container [2019-10-02 18:37:10,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 06:37:10" (3/3) ... [2019-10-02 18:37:10,890 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2019-10-02 18:37:10,902 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 18:37:10,912 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 18:37:10,933 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 18:37:10,967 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 18:37:10,967 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 18:37:10,968 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 18:37:10,968 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 18:37:10,968 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 18:37:10,968 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 18:37:10,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 18:37:10,969 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 18:37:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-02 18:37:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-02 18:37:11,013 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:37:11,014 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 18:37:11,017 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:37:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:37:11,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1307500665, now seen corresponding path program 1 times [2019-10-02 18:37:11,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:37:11,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:11,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:37:11,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:11,083 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:37:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:37:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:37:11,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:37:11,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 18:37:11,368 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:37:11,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 18:37:11,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 18:37:11,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 18:37:11,391 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-10-02 18:37:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:37:12,347 INFO L93 Difference]: Finished difference Result 362 states and 538 transitions. [2019-10-02 18:37:12,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 18:37:12,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-10-02 18:37:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:37:12,376 INFO L225 Difference]: With dead ends: 362 [2019-10-02 18:37:12,376 INFO L226 Difference]: Without dead ends: 294 [2019-10-02 18:37:12,378 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 18:37:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-10-02 18:37:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-10-02 18:37:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-02 18:37:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 421 transitions. [2019-10-02 18:37:12,456 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 421 transitions. Word has length 30 [2019-10-02 18:37:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:37:12,457 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 421 transitions. [2019-10-02 18:37:12,457 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 18:37:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 421 transitions. [2019-10-02 18:37:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-02 18:37:12,462 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:37:12,463 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 18:37:12,463 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:37:12,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:37:12,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1110741703, now seen corresponding path program 1 times [2019-10-02 18:37:12,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:37:12,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:12,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:37:12,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:12,466 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:37:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:37:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:37:12,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:37:12,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 18:37:12,723 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:37:12,726 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 18:37:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 18:37:12,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 18:37:12,727 INFO L87 Difference]: Start difference. First operand 294 states and 421 transitions. Second operand 6 states. [2019-10-02 18:37:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:37:13,684 INFO L93 Difference]: Finished difference Result 453 states and 620 transitions. [2019-10-02 18:37:13,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 18:37:13,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-02 18:37:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:37:13,689 INFO L225 Difference]: With dead ends: 453 [2019-10-02 18:37:13,689 INFO L226 Difference]: Without dead ends: 453 [2019-10-02 18:37:13,690 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 18:37:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-02 18:37:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2019-10-02 18:37:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-02 18:37:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 606 transitions. [2019-10-02 18:37:13,720 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 606 transitions. Word has length 99 [2019-10-02 18:37:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:37:13,721 INFO L475 AbstractCegarLoop]: Abstraction has 445 states and 606 transitions. [2019-10-02 18:37:13,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 18:37:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 606 transitions. [2019-10-02 18:37:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-02 18:37:13,723 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:37:13,723 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 18:37:13,724 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:37:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:37:13,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2136138939, now seen corresponding path program 1 times [2019-10-02 18:37:13,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:37:13,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:13,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:37:13,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:13,726 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:37:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:37:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:37:13,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:37:13,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 18:37:13,877 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:37:13,878 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 18:37:13,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 18:37:13,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 18:37:13,878 INFO L87 Difference]: Start difference. First operand 445 states and 606 transitions. Second operand 4 states. [2019-10-02 18:37:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:37:15,011 INFO L93 Difference]: Finished difference Result 1166 states and 1442 transitions. [2019-10-02 18:37:15,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 18:37:15,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2019-10-02 18:37:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:37:15,015 INFO L225 Difference]: With dead ends: 1166 [2019-10-02 18:37:15,015 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 18:37:15,016 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 18:37:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 18:37:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 18:37:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 18:37:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 18:37:15,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2019-10-02 18:37:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:37:15,017 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 18:37:15,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 18:37:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 18:37:15,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 18:37:15,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 06:37:15 BoogieIcfgContainer [2019-10-02 18:37:15,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 18:37:15,026 INFO L168 Benchmark]: Toolchain (without parser) took 6283.46 ms. Allocated memory was 130.0 MB in the beginning and 353.9 MB in the end (delta: 223.9 MB). Free memory was 84.0 MB in the beginning and 289.8 MB in the end (delta: -205.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2019-10-02 18:37:15,027 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 130.0 MB. Free memory was 104.2 MB in the beginning and 104.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 18:37:15,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.63 ms. Allocated memory was 130.0 MB in the beginning and 198.2 MB in the end (delta: 68.2 MB). Free memory was 83.8 MB in the beginning and 155.4 MB in the end (delta: -71.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2019-10-02 18:37:15,029 INFO L168 Benchmark]: Boogie Preprocessor took 109.05 ms. Allocated memory is still 198.2 MB. Free memory was 155.4 MB in the beginning and 150.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2019-10-02 18:37:15,030 INFO L168 Benchmark]: RCFGBuilder took 1340.57 ms. Allocated memory was 198.2 MB in the beginning and 216.0 MB in the end (delta: 17.8 MB). Free memory was 150.6 MB in the beginning and 165.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2019-10-02 18:37:15,031 INFO L168 Benchmark]: TraceAbstraction took 4139.88 ms. Allocated memory was 216.0 MB in the beginning and 353.9 MB in the end (delta: 137.9 MB). Free memory was 164.4 MB in the beginning and 289.8 MB in the end (delta: -125.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-10-02 18:37:15,035 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 130.0 MB. Free memory was 104.2 MB in the beginning and 104.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.63 ms. Allocated memory was 130.0 MB in the beginning and 198.2 MB in the end (delta: 68.2 MB). Free memory was 83.8 MB in the beginning and 155.4 MB in the end (delta: -71.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.05 ms. Allocated memory is still 198.2 MB. Free memory was 155.4 MB in the beginning and 150.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1340.57 ms. Allocated memory was 198.2 MB in the beginning and 216.0 MB in the end (delta: 17.8 MB). Free memory was 150.6 MB in the beginning and 165.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4139.88 ms. Allocated memory was 216.0 MB in the beginning and 353.9 MB in the end (delta: 137.9 MB). Free memory was 164.4 MB in the beginning and 289.8 MB in the end (delta: -125.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 105 SDtfs, 986 SDslu, 61 SDs, 0 SdLazy, 1719 SolverSat, 501 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=445occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 235 ConstructedInterpolants, 0 QuantifiedInterpolants, 76490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 46/46 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...