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/ldv-regression/mutex_lock_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:23:05,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:23:05,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:23:05,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:23:05,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:23:05,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:23:05,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:23:05,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:23:05,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:23:05,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:23:05,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:23:05,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:23:05,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:23:05,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:23:05,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:23:05,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:23:05,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-03 02:23:05,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:23:05,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:23:05,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:23:05,791 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 [2019-10-03 02:23:05,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:23:05,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:23:05,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:23:05,820 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:23:05,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:23:05,820 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:23:05,821 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:23:05,821 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:23:05,821 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:23:05,821 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:23:05,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:23:05,824 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:23:05,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:23:05,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:23:05,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:23:05,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:23:05,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:23:05,825 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:23:05,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:23:05,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:23:05,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:23:05,826 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:23:05,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:23:05,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:23:05,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:23:05,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:23:05,827 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:23:05,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:23:05,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:23:05,828 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:23:05,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:23:05,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:23:05,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:23:05,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:23:05,891 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:23:05,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-10-03 02:23:05,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1430f74/0f457a6200bc4d75879dd0e96d9c6478/FLAG969ca9624 [2019-10-03 02:23:06,426 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:23:06,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-10-03 02:23:06,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1430f74/0f457a6200bc4d75879dd0e96d9c6478/FLAG969ca9624 [2019-10-03 02:23:06,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1430f74/0f457a6200bc4d75879dd0e96d9c6478 [2019-10-03 02:23:06,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:23:06,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:23:06,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:23:06,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:23:06,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:23:06,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:23:06" (1/1) ... [2019-10-03 02:23:06,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c18f7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:06, skipping insertion in model container [2019-10-03 02:23:06,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:23:06" (1/1) ... [2019-10-03 02:23:06,838 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:23:06,853 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:23:07,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:23:07,030 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:23:07,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:23:07,058 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:23:07,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07 WrapperNode [2019-10-03 02:23:07,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:23:07,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:23:07,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:23:07,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:23:07,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (1/1) ... [2019-10-03 02:23:07,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (1/1) ... [2019-10-03 02:23:07,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (1/1) ... [2019-10-03 02:23:07,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (1/1) ... [2019-10-03 02:23:07,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (1/1) ... [2019-10-03 02:23:07,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (1/1) ... [2019-10-03 02:23:07,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (1/1) ... [2019-10-03 02:23:07,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:23:07,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:23:07,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:23:07,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:23:07,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (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 [2019-10-03 02:23:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:23:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:23:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-10-03 02:23:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-03 02:23:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-03 02:23:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:23:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-10-03 02:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-03 02:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-03 02:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:23:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:23:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:23:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:23:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:23:07,445 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:23:07,445 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-03 02:23:07,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:23:07 BoogieIcfgContainer [2019-10-03 02:23:07,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:23:07,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:23:07,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:23:07,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:23:07,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:23:06" (1/3) ... [2019-10-03 02:23:07,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26885113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:23:07, skipping insertion in model container [2019-10-03 02:23:07,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:23:07" (2/3) ... [2019-10-03 02:23:07,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26885113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:23:07, skipping insertion in model container [2019-10-03 02:23:07,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:23:07" (3/3) ... [2019-10-03 02:23:07,455 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2019-10-03 02:23:07,467 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:23:07,477 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:23:07,500 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:23:07,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:23:07,554 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:23:07,554 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:23:07,554 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:23:07,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:23:07,554 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:23:07,555 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:23:07,555 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:23:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-03 02:23:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-03 02:23:07,586 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:23:07,587 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:23:07,590 INFO L418 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:23:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:23:07,609 INFO L82 PathProgramCache]: Analyzing trace with hash 589228543, now seen corresponding path program 1 times [2019-10-03 02:23:07,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:23:07,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:23:07,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:23:07,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:23:07,661 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:23:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:23:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:23:07,831 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:23:07,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:23:07,832 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:23:07,837 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:23:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:23:07,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:23:07,856 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2019-10-03 02:23:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:23:07,936 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2019-10-03 02:23:07,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:23:07,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-03 02:23:07,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:23:07,951 INFO L225 Difference]: With dead ends: 26 [2019-10-03 02:23:07,951 INFO L226 Difference]: Without dead ends: 18 [2019-10-03 02:23:07,953 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:23:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-03 02:23:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-03 02:23:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-03 02:23:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-10-03 02:23:08,001 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 11 [2019-10-03 02:23:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:23:08,002 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-10-03 02:23:08,002 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:23:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-10-03 02:23:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-03 02:23:08,003 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:23:08,003 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:23:08,004 INFO L418 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:23:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:23:08,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1259031447, now seen corresponding path program 1 times [2019-10-03 02:23:08,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:23:08,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:23:08,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:23:08,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:23:08,007 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:23:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:23:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:23:08,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:23:08,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:23:08,153 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:23:08,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:23:08,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:23:08,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:23:08,156 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 7 states. [2019-10-03 02:23:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:23:08,222 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-10-03 02:23:08,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:23:08,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-03 02:23:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:23:08,223 INFO L225 Difference]: With dead ends: 15 [2019-10-03 02:23:08,223 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:23:08,224 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:23:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:23:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:23:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:23:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:23:08,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-03 02:23:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:23:08,226 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:23:08,226 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:23:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:23:08,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:23:08,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:23:08 BoogieIcfgContainer [2019-10-03 02:23:08,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:23:08,236 INFO L168 Benchmark]: Toolchain (without parser) took 1413.20 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 85.2 MB in the beginning and 120.9 MB in the end (delta: -35.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:23:08,237 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:23:08,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.60 ms. Allocated memory is still 138.4 MB. Free memory was 85.0 MB in the beginning and 75.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:23:08,242 INFO L168 Benchmark]: Boogie Preprocessor took 120.29 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 75.4 MB in the beginning and 175.9 MB in the end (delta: -100.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:23:08,243 INFO L168 Benchmark]: RCFGBuilder took 266.91 ms. Allocated memory is still 198.7 MB. Free memory was 175.9 MB in the beginning and 162.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:23:08,244 INFO L168 Benchmark]: TraceAbstraction took 785.15 ms. Allocated memory is still 198.7 MB. Free memory was 161.8 MB in the beginning and 120.9 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:23:08,248 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.60 ms. Allocated memory is still 138.4 MB. Free memory was 85.0 MB in the beginning and 75.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.29 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 75.4 MB in the beginning and 175.9 MB in the end (delta: -100.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.91 ms. Allocated memory is still 198.7 MB. Free memory was 175.9 MB in the beginning and 162.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 785.15 ms. Allocated memory is still 198.7 MB. Free memory was 161.8 MB in the beginning and 120.9 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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 6 procedures, 29 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 4 SDslu, 96 SDs, 0 SdLazy, 40 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...