/usr/bin/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:21:31,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:21:31,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:21:31,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:21:31,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:21:31,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:21:31,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:21:31,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:21:31,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:21:31,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:21:31,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:21:31,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:21:31,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:21:31,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:21:31,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:21:31,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:21:31,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:21:31,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:21:31,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:21:31,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:21:31,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 19:21:31,793 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:21:31,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:21:31,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:21:31,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:21:31,795 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:21:31,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:21:31,796 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:21:31,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:21:31,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:21:31,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:21:31,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:21:31,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:21:31,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:21:31,798 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:21:31,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:21:31,798 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:21:31,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:21:31,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:21:31,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:21:31,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:21:31,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:21:31,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:21:31,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:21:31,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:21:31,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:21:31,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:21:31,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:21:31,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:21:31,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:21:32,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:21:32,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:21:32,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:21:32,076 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:21:32,076 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:21:32,077 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2019-11-06 19:21:32,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b37c00c/c9df85d980f2458d9a8273ae1b54febe/FLAG0b4a4c08b [2019-11-06 19:21:32,882 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:21:32,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2019-11-06 19:21:32,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b37c00c/c9df85d980f2458d9a8273ae1b54febe/FLAG0b4a4c08b [2019-11-06 19:21:32,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b37c00c/c9df85d980f2458d9a8273ae1b54febe [2019-11-06 19:21:32,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:21:33,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:21:33,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:21:33,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:21:33,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:21:33,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:21:32" (1/1) ... [2019-11-06 19:21:33,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2406b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:33, skipping insertion in model container [2019-11-06 19:21:33,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:21:32" (1/1) ... [2019-11-06 19:21:33,018 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:21:33,143 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:21:34,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:21:34,245 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:21:34,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:21:34,749 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:21:34,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34 WrapperNode [2019-11-06 19:21:34,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:21:34,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:21:34,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:21:34,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:21:34,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (1/1) ... [2019-11-06 19:21:34,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (1/1) ... [2019-11-06 19:21:34,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (1/1) ... [2019-11-06 19:21:34,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (1/1) ... [2019-11-06 19:21:34,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (1/1) ... [2019-11-06 19:21:34,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (1/1) ... [2019-11-06 19:21:35,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (1/1) ... [2019-11-06 19:21:35,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:21:35,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:21:35,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:21:35,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:21:35,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (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 [2019-11-06 19:21:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:21:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:21:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:21:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:21:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:21:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:21:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:21:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:21:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:21:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:21:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:21:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:21:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:21:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:21:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:21:39,067 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:21:39,068 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:21:39,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:21:39 BoogieIcfgContainer [2019-11-06 19:21:39,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:21:39,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:21:39,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:21:39,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:21:39,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:21:32" (1/3) ... [2019-11-06 19:21:39,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3466ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:21:39, skipping insertion in model container [2019-11-06 19:21:39,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:34" (2/3) ... [2019-11-06 19:21:39,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3466ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:21:39, skipping insertion in model container [2019-11-06 19:21:39,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:21:39" (3/3) ... [2019-11-06 19:21:39,101 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label48.c [2019-11-06 19:21:39,114 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:21:39,132 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:21:39,150 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:21:39,213 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:21:39,213 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:21:39,213 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:21:39,214 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:21:39,214 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:21:39,214 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:21:39,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:21:39,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:21:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 19:21:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 19:21:39,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:39,288 INFO L410 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] [2019-11-06 19:21:39,291 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:39,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1448610927, now seen corresponding path program 1 times [2019-11-06 19:21:39,312 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:39,312 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474561379] [2019-11-06 19:21:39,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:39,825 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474561379] [2019-11-06 19:21:39,826 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:39,827 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:21:39,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871822044] [2019-11-06 19:21:39,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:21:39,835 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:21:39,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:21:39,853 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-11-06 19:21:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:49,098 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-11-06 19:21:49,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:21:49,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-06 19:21:49,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:49,132 INFO L225 Difference]: With dead ends: 2984 [2019-11-06 19:21:49,132 INFO L226 Difference]: Without dead ends: 2142 [2019-11-06 19:21:49,142 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:21:49,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-11-06 19:21:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-11-06 19:21:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-11-06 19:21:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-11-06 19:21:49,314 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 60 [2019-11-06 19:21:49,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:21:49,317 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-11-06 19:21:49,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:21:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-11-06 19:21:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-06 19:21:49,339 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:49,340 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 19:21:49,340 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:49,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1160293157, now seen corresponding path program 1 times [2019-11-06 19:21:49,341 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:49,342 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769811331] [2019-11-06 19:21:49,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:49,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769811331] [2019-11-06 19:21:49,774 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:49,774 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:21:49,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755721381] [2019-11-06 19:21:49,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:21:49,779 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:49,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:21:49,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:21:49,780 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-11-06 19:21:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:57,834 INFO L93 Difference]: Finished difference Result 6473 states and 11554 transitions. [2019-11-06 19:21:57,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 19:21:57,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 149 [2019-11-06 19:21:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:57,860 INFO L225 Difference]: With dead ends: 6473 [2019-11-06 19:21:57,861 INFO L226 Difference]: Without dead ends: 4347 [2019-11-06 19:21:57,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:21:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2019-11-06 19:21:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 4301. [2019-11-06 19:21:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4301 states. [2019-11-06 19:21:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 7377 transitions. [2019-11-06 19:21:58,003 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 7377 transitions. Word has length 149 [2019-11-06 19:21:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:21:58,004 INFO L462 AbstractCegarLoop]: Abstraction has 4301 states and 7377 transitions. [2019-11-06 19:21:58,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:21:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 7377 transitions. [2019-11-06 19:21:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 19:21:58,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:58,008 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 19:21:58,008 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:58,008 INFO L82 PathProgramCache]: Analyzing trace with hash 610889412, now seen corresponding path program 1 times [2019-11-06 19:21:58,009 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:58,009 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933855211] [2019-11-06 19:21:58,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:58,228 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933855211] [2019-11-06 19:21:58,228 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:58,229 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 19:21:58,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766575122] [2019-11-06 19:21:58,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 19:21:58,231 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:58,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 19:21:58,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:21:58,232 INFO L87 Difference]: Start difference. First operand 4301 states and 7377 transitions. Second operand 7 states. [2019-11-06 19:22:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:22:06,675 INFO L93 Difference]: Finished difference Result 13120 states and 22980 transitions. [2019-11-06 19:22:06,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 19:22:06,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2019-11-06 19:22:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:22:06,722 INFO L225 Difference]: With dead ends: 13120 [2019-11-06 19:22:06,722 INFO L226 Difference]: Without dead ends: 8825 [2019-11-06 19:22:06,735 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:22:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8825 states. [2019-11-06 19:22:06,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8825 to 8723. [2019-11-06 19:22:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8723 states. [2019-11-06 19:22:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8723 states to 8723 states and 13156 transitions. [2019-11-06 19:22:07,005 INFO L78 Accepts]: Start accepts. Automaton has 8723 states and 13156 transitions. Word has length 150 [2019-11-06 19:22:07,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:22:07,005 INFO L462 AbstractCegarLoop]: Abstraction has 8723 states and 13156 transitions. [2019-11-06 19:22:07,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 19:22:07,006 INFO L276 IsEmpty]: Start isEmpty. Operand 8723 states and 13156 transitions. [2019-11-06 19:22:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-11-06 19:22:07,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:22:07,011 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-06 19:22:07,011 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:22:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:22:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1350391872, now seen corresponding path program 1 times [2019-11-06 19:22:07,012 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:22:07,012 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740418936] [2019-11-06 19:22:07,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:22:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 106 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 19:22:07,277 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740418936] [2019-11-06 19:22:07,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906540906] [2019-11-06 19:22:07,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:22:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:07,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 19:22:07,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:22:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-11-06 19:22:07,549 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:22:07,549 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2019-11-06 19:22:07,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498572320] [2019-11-06 19:22:07,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:22:07,550 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:22:07,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:22:07,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 19:22:07,551 INFO L87 Difference]: Start difference. First operand 8723 states and 13156 transitions. Second operand 5 states.