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/Problem02_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 17:42:16,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 17:42:16,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 17:42:16,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 17:42:16,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 17:42:16,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 17:42:16,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 17:42:16,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 17:42:16,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 17:42:16,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 17:42:16,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 17:42:16,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 17:42:16,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 17:42:16,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 17:42:16,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 17:42:16,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 17:42:16,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 17:42:16,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 17:42:16,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 17:42:16,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 17:42:16,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 17:42:16,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 17:42:16,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 17:42:16,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 17:42:16,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 17:42:16,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 17:42:16,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 17:42:16,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 17:42:16,897 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 17:42:16,912 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 17:42:16,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 17:42:16,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 17:42:16,913 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 17:42:16,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 17:42:16,914 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 17:42:16,914 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 17:42:16,914 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 17:42:16,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 17:42:16,914 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 17:42:16,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 17:42:16,915 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 17:42:16,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 17:42:16,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 17:42:16,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 17:42:16,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 17:42:16,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 17:42:16,916 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 17:42:16,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 17:42:16,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 17:42:16,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 17:42:16,917 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 17:42:16,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 17:42:16,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:42:16,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 17:42:16,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 17:42:16,918 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 17:42:16,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 17:42:16,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 17:42:16,919 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 17:42:16,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 17:42:16,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 17:42:16,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 17:42:16,965 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 17:42:16,965 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 17:42:16,967 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2019-10-02 17:42:17,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af5139671/af686358757b499ea3f4379142dd6304/FLAG4fc5bf1d8 [2019-10-02 17:42:17,602 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 17:42:17,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2019-10-02 17:42:17,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af5139671/af686358757b499ea3f4379142dd6304/FLAG4fc5bf1d8 [2019-10-02 17:42:17,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af5139671/af686358757b499ea3f4379142dd6304 [2019-10-02 17:42:17,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 17:42:17,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 17:42:17,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 17:42:17,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 17:42:17,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 17:42:17,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:42:17" (1/1) ... [2019-10-02 17:42:17,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722d538c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:17, skipping insertion in model container [2019-10-02 17:42:17,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:42:17" (1/1) ... [2019-10-02 17:42:17,891 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 17:42:17,955 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 17:42:18,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:42:18,534 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 17:42:18,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:42:18,655 INFO L192 MainTranslator]: Completed translation [2019-10-02 17:42:18,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18 WrapperNode [2019-10-02 17:42:18,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 17:42:18,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 17:42:18,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 17:42:18,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 17:42:18,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (1/1) ... [2019-10-02 17:42:18,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (1/1) ... [2019-10-02 17:42:18,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (1/1) ... [2019-10-02 17:42:18,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (1/1) ... [2019-10-02 17:42:18,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (1/1) ... [2019-10-02 17:42:18,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (1/1) ... [2019-10-02 17:42:18,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (1/1) ... [2019-10-02 17:42:18,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 17:42:18,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 17:42:18,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 17:42:18,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 17:42:18,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (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 17:42:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 17:42:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 17:42:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 17:42:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 17:42:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 17:42:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 17:42:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 17:42:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 17:42:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 17:42:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 17:42:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 17:42:20,179 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 17:42:20,180 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 17:42:20,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:42:20 BoogieIcfgContainer [2019-10-02 17:42:20,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 17:42:20,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 17:42:20,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 17:42:20,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 17:42:20,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 05:42:17" (1/3) ... [2019-10-02 17:42:20,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e289ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:42:20, skipping insertion in model container [2019-10-02 17:42:20,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:42:18" (2/3) ... [2019-10-02 17:42:20,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e289ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:42:20, skipping insertion in model container [2019-10-02 17:42:20,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:42:20" (3/3) ... [2019-10-02 17:42:20,190 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2019-10-02 17:42:20,200 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 17:42:20,208 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 17:42:20,225 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 17:42:20,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 17:42:20,253 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 17:42:20,253 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 17:42:20,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 17:42:20,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 17:42:20,254 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 17:42:20,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 17:42:20,255 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 17:42:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-02 17:42:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-02 17:42:20,294 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:42:20,295 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:42:20,297 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:42:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:42:20,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1410555135, now seen corresponding path program 1 times [2019-10-02 17:42:20,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:42:20,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:42:20,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:42:20,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:42:20,366 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:42:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:42:20,823 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 17:42:20,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:42:20,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:42:20,827 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:42:20,837 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:42:20,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:42:20,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:42:20,856 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-10-02 17:42:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:42:21,821 INFO L93 Difference]: Finished difference Result 388 states and 591 transitions. [2019-10-02 17:42:21,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:42:21,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2019-10-02 17:42:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:42:21,856 INFO L225 Difference]: With dead ends: 388 [2019-10-02 17:42:21,857 INFO L226 Difference]: Without dead ends: 320 [2019-10-02 17:42:21,860 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 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 17:42:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-02 17:42:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2019-10-02 17:42:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-10-02 17:42:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 470 transitions. [2019-10-02 17:42:21,947 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 470 transitions. Word has length 109 [2019-10-02 17:42:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:42:21,948 INFO L475 AbstractCegarLoop]: Abstraction has 318 states and 470 transitions. [2019-10-02 17:42:21,948 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:42:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 470 transitions. [2019-10-02 17:42:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-02 17:42:21,953 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:42:21,954 INFO L411 BasicCegarLoop]: trace histogram [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, 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 17:42:21,954 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:42:21,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:42:21,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1641202120, now seen corresponding path program 1 times [2019-10-02 17:42:21,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:42:21,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:42:21,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:42:21,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:42:21,957 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:42:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:42:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:42:22,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:42:22,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:42:22,123 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:42:22,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:42:22,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:42:22,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:42:22,126 INFO L87 Difference]: Start difference. First operand 318 states and 470 transitions. Second operand 3 states. [2019-10-02 17:42:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:42:22,750 INFO L93 Difference]: Finished difference Result 611 states and 862 transitions. [2019-10-02 17:42:22,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:42:22,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-02 17:42:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:42:22,757 INFO L225 Difference]: With dead ends: 611 [2019-10-02 17:42:22,757 INFO L226 Difference]: Without dead ends: 611 [2019-10-02 17:42:22,758 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 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 17:42:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-10-02 17:42:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2019-10-02 17:42:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-10-02 17:42:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 862 transitions. [2019-10-02 17:42:22,791 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 862 transitions. Word has length 122 [2019-10-02 17:42:22,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:42:22,792 INFO L475 AbstractCegarLoop]: Abstraction has 611 states and 862 transitions. [2019-10-02 17:42:22,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:42:22,792 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 862 transitions. [2019-10-02 17:42:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-02 17:42:22,796 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:42:22,797 INFO L411 BasicCegarLoop]: trace histogram [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, 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 17:42:22,797 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:42:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:42:22,797 INFO L82 PathProgramCache]: Analyzing trace with hash -434700877, now seen corresponding path program 1 times [2019-10-02 17:42:22,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:42:22,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:42:22,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:42:22,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:42:22,800 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:42:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:42:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:42:22,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:42:22,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 17:42:22,942 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:42:22,944 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 17:42:22,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 17:42:22,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 17:42:22,945 INFO L87 Difference]: Start difference. First operand 611 states and 862 transitions. Second operand 6 states. [2019-10-02 17:42:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:42:23,440 INFO L93 Difference]: Finished difference Result 470 states and 609 transitions. [2019-10-02 17:42:23,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 17:42:23,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-10-02 17:42:23,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:42:23,443 INFO L225 Difference]: With dead ends: 470 [2019-10-02 17:42:23,443 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 17:42:23,444 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-02 17:42:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 17:42:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 17:42:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 17:42:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 17:42:23,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 132 [2019-10-02 17:42:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:42:23,445 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 17:42:23,445 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 17:42:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 17:42:23,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 17:42:23,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 05:42:23 BoogieIcfgContainer [2019-10-02 17:42:23,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 17:42:23,456 INFO L168 Benchmark]: Toolchain (without parser) took 5581.31 ms. Allocated memory was 133.2 MB in the beginning and 273.7 MB in the end (delta: 140.5 MB). Free memory was 85.1 MB in the beginning and 101.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. [2019-10-02 17:42:23,458 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 133.2 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 17:42:23,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.09 ms. Allocated memory was 133.2 MB in the beginning and 201.9 MB in the end (delta: 68.7 MB). Free memory was 84.7 MB in the beginning and 165.6 MB in the end (delta: -80.9 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2019-10-02 17:42:23,462 INFO L168 Benchmark]: Boogie Preprocessor took 131.93 ms. Allocated memory is still 201.9 MB. Free memory was 165.6 MB in the beginning and 160.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2019-10-02 17:42:23,463 INFO L168 Benchmark]: RCFGBuilder took 1392.76 ms. Allocated memory was 201.9 MB in the beginning and 223.3 MB in the end (delta: 21.5 MB). Free memory was 160.2 MB in the beginning and 177.2 MB in the end (delta: -17.0 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. [2019-10-02 17:42:23,464 INFO L168 Benchmark]: TraceAbstraction took 3271.02 ms. Allocated memory was 223.3 MB in the beginning and 273.7 MB in the end (delta: 50.3 MB). Free memory was 175.9 MB in the beginning and 101.3 MB in the end (delta: 74.6 MB). Peak memory consumption was 124.9 MB. Max. memory is 7.1 GB. [2019-10-02 17:42:23,474 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 133.2 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.09 ms. Allocated memory was 133.2 MB in the beginning and 201.9 MB in the end (delta: 68.7 MB). Free memory was 84.7 MB in the beginning and 165.6 MB in the end (delta: -80.9 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.93 ms. Allocated memory is still 201.9 MB. Free memory was 165.6 MB in the beginning and 160.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1392.76 ms. Allocated memory was 201.9 MB in the beginning and 223.3 MB in the end (delta: 21.5 MB). Free memory was 160.2 MB in the beginning and 177.2 MB in the end (delta: -17.0 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3271.02 ms. Allocated memory was 223.3 MB in the beginning and 273.7 MB in the end (delta: 50.3 MB). Free memory was 175.9 MB in the beginning and 101.3 MB in the end (delta: 74.6 MB). Peak memory consumption was 124.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 481]: 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, 236 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 173 SDtfs, 673 SDslu, 74 SDs, 0 SdLazy, 1174 SolverSat, 314 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 363 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 119464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...