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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 17:37:27,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 17:37:27,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 17:37:27,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 17:37:27,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 17:37:27,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 17:37:27,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 17:37:27,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 17:37:27,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 17:37:27,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 17:37:27,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 17:37:27,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 17:37:27,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 17:37:27,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 17:37:27,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 17:37:27,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 17:37:27,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 17:37:27,773 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 17:37:27,793 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 17:37:27,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 17:37:27,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 17:37:27,795 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 17:37:27,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 17:37:27,796 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 17:37:27,796 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 17:37:27,796 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 17:37:27,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 17:37:27,796 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 17:37:27,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 17:37:27,798 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 17:37:27,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 17:37:27,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 17:37:27,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 17:37:27,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 17:37:27,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 17:37:27,800 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 17:37:27,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 17:37:27,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 17:37:27,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 17:37:27,801 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 17:37:27,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 17:37:27,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:37:27,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 17:37:27,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 17:37:27,802 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 17:37:27,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 17:37:27,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 17:37:27,802 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 17:37:27,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 17:37:27,866 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 17:37:27,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 17:37:27,871 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 17:37:27,871 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 17:37:27,872 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label45.c [2019-10-02 17:37:27,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeebc4164/1a5fb7f99ba4453aa3594912731c4d72/FLAG745ecf550 [2019-10-02 17:37:28,536 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 17:37:28,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label45.c [2019-10-02 17:37:28,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeebc4164/1a5fb7f99ba4453aa3594912731c4d72/FLAG745ecf550 [2019-10-02 17:37:28,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeebc4164/1a5fb7f99ba4453aa3594912731c4d72 [2019-10-02 17:37:28,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 17:37:28,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 17:37:28,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 17:37:28,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 17:37:28,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 17:37:28,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:37:28" (1/1) ... [2019-10-02 17:37:28,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f7ed23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:28, skipping insertion in model container [2019-10-02 17:37:28,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:37:28" (1/1) ... [2019-10-02 17:37:28,813 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 17:37:28,877 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 17:37:29,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:37:29,412 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 17:37:29,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:37:29,554 INFO L192 MainTranslator]: Completed translation [2019-10-02 17:37:29,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29 WrapperNode [2019-10-02 17:37:29,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 17:37:29,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 17:37:29,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 17:37:29,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 17:37:29,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (1/1) ... [2019-10-02 17:37:29,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (1/1) ... [2019-10-02 17:37:29,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (1/1) ... [2019-10-02 17:37:29,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (1/1) ... [2019-10-02 17:37:29,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (1/1) ... [2019-10-02 17:37:29,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (1/1) ... [2019-10-02 17:37:29,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (1/1) ... [2019-10-02 17:37:29,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 17:37:29,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 17:37:29,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 17:37:29,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 17:37:29,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (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 17:37:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 17:37:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 17:37:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 17:37:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 17:37:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 17:37:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 17:37:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 17:37:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 17:37:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 17:37:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 17:37:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 17:37:31,453 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 17:37:31,454 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 17:37:31,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:37:31 BoogieIcfgContainer [2019-10-02 17:37:31,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 17:37:31,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 17:37:31,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 17:37:31,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 17:37:31,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 05:37:28" (1/3) ... [2019-10-02 17:37:31,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7058c099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:37:31, skipping insertion in model container [2019-10-02 17:37:31,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:37:29" (2/3) ... [2019-10-02 17:37:31,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7058c099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:37:31, skipping insertion in model container [2019-10-02 17:37:31,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:37:31" (3/3) ... [2019-10-02 17:37:31,467 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label45.c [2019-10-02 17:37:31,478 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 17:37:31,487 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 17:37:31,507 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 17:37:31,554 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 17:37:31,555 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 17:37:31,555 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 17:37:31,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 17:37:31,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 17:37:31,556 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 17:37:31,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 17:37:31,556 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 17:37:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-02 17:37:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-02 17:37:31,615 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:37:31,617 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] [2019-10-02 17:37:31,619 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:37:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:37:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1702778474, now seen corresponding path program 1 times [2019-10-02 17:37:31,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:37:31,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:31,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:37:31,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:31,680 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:37:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:37:32,129 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 17:37:32,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:37:32,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:37:32,133 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:37:32,143 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:37:32,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:37:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:37:32,164 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-10-02 17:37:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:37:33,331 INFO L93 Difference]: Finished difference Result 388 states and 554 transitions. [2019-10-02 17:37:33,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:37:33,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-02 17:37:33,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:37:33,350 INFO L225 Difference]: With dead ends: 388 [2019-10-02 17:37:33,350 INFO L226 Difference]: Without dead ends: 320 [2019-10-02 17:37:33,352 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:37:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-02 17:37:33,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-10-02 17:37:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-10-02 17:37:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 465 transitions. [2019-10-02 17:37:33,438 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 465 transitions. Word has length 88 [2019-10-02 17:37:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:37:33,440 INFO L475 AbstractCegarLoop]: Abstraction has 320 states and 465 transitions. [2019-10-02 17:37:33,440 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:37:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 465 transitions. [2019-10-02 17:37:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-02 17:37:33,451 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:37:33,454 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 17:37:33,455 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:37:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:37:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash 302411185, now seen corresponding path program 1 times [2019-10-02 17:37:33,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:37:33,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:33,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:37:33,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:33,461 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:37:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:37:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:37:33,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:37:33,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 17:37:33,636 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:37:33,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 17:37:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 17:37:33,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 17:37:33,639 INFO L87 Difference]: Start difference. First operand 320 states and 465 transitions. Second operand 4 states. [2019-10-02 17:37:34,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:37:34,802 INFO L93 Difference]: Finished difference Result 902 states and 1236 transitions. [2019-10-02 17:37:34,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 17:37:34,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2019-10-02 17:37:34,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:37:34,814 INFO L225 Difference]: With dead ends: 902 [2019-10-02 17:37:34,814 INFO L226 Difference]: Without dead ends: 902 [2019-10-02 17:37:34,815 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 17:37:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2019-10-02 17:37:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 899. [2019-10-02 17:37:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-02 17:37:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1231 transitions. [2019-10-02 17:37:34,879 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1231 transitions. Word has length 96 [2019-10-02 17:37:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:37:34,880 INFO L475 AbstractCegarLoop]: Abstraction has 899 states and 1231 transitions. [2019-10-02 17:37:34,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 17:37:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1231 transitions. [2019-10-02 17:37:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-02 17:37:34,886 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:37:34,887 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 17:37:34,887 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:37:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:37:34,887 INFO L82 PathProgramCache]: Analyzing trace with hash 574467246, now seen corresponding path program 1 times [2019-10-02 17:37:34,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:37:34,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:34,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:37:34,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:34,890 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:37:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:37:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:37:35,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:37:35,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 17:37:35,048 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:37:35,048 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 17:37:35,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 17:37:35,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 17:37:35,049 INFO L87 Difference]: Start difference. First operand 899 states and 1231 transitions. Second operand 6 states. [2019-10-02 17:37:36,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:37:36,054 INFO L93 Difference]: Finished difference Result 1229 states and 1711 transitions. [2019-10-02 17:37:36,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 17:37:36,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-10-02 17:37:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:37:36,064 INFO L225 Difference]: With dead ends: 1229 [2019-10-02 17:37:36,065 INFO L226 Difference]: Without dead ends: 1229 [2019-10-02 17:37:36,065 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 17:37:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2019-10-02 17:37:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1211. [2019-10-02 17:37:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2019-10-02 17:37:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1651 transitions. [2019-10-02 17:37:36,114 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1651 transitions. Word has length 110 [2019-10-02 17:37:36,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:37:36,115 INFO L475 AbstractCegarLoop]: Abstraction has 1211 states and 1651 transitions. [2019-10-02 17:37:36,115 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 17:37:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1651 transitions. [2019-10-02 17:37:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-02 17:37:36,119 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:37:36,120 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:36,120 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:37:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:37:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1937402390, now seen corresponding path program 1 times [2019-10-02 17:37:36,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:37:36,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:36,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:37:36,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:36,123 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:37:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:37:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:37:36,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:37:36,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 17:37:36,352 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:37:36,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 17:37:36,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 17:37:36,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 17:37:36,353 INFO L87 Difference]: Start difference. First operand 1211 states and 1651 transitions. Second operand 6 states. [2019-10-02 17:37:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:37:37,469 INFO L93 Difference]: Finished difference Result 1572 states and 2102 transitions. [2019-10-02 17:37:37,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 17:37:37,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2019-10-02 17:37:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:37:37,484 INFO L225 Difference]: With dead ends: 1572 [2019-10-02 17:37:37,484 INFO L226 Difference]: Without dead ends: 1572 [2019-10-02 17:37:37,486 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-02 17:37:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2019-10-02 17:37:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1539. [2019-10-02 17:37:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1539 states. [2019-10-02 17:37:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1952 transitions. [2019-10-02 17:37:37,559 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1952 transitions. Word has length 112 [2019-10-02 17:37:37,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:37:37,559 INFO L475 AbstractCegarLoop]: Abstraction has 1539 states and 1952 transitions. [2019-10-02 17:37:37,560 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 17:37:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1952 transitions. [2019-10-02 17:37:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-02 17:37:37,564 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:37:37,565 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:37:37,565 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:37:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:37:37,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1854304108, now seen corresponding path program 1 times [2019-10-02 17:37:37,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:37:37,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:37,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:37:37,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:37,570 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:37:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:37:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:37:37,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:37:37,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 17:37:37,720 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:37:37,720 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 17:37:37,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 17:37:37,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 17:37:37,721 INFO L87 Difference]: Start difference. First operand 1539 states and 1952 transitions. Second operand 6 states. [2019-10-02 17:37:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:37:38,817 INFO L93 Difference]: Finished difference Result 2773 states and 3503 transitions. [2019-10-02 17:37:38,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 17:37:38,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-10-02 17:37:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:37:38,840 INFO L225 Difference]: With dead ends: 2773 [2019-10-02 17:37:38,840 INFO L226 Difference]: Without dead ends: 2773 [2019-10-02 17:37:38,841 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-02 17:37:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2019-10-02 17:37:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2733. [2019-10-02 17:37:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2733 states. [2019-10-02 17:37:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 3336 transitions. [2019-10-02 17:37:38,931 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 3336 transitions. Word has length 119 [2019-10-02 17:37:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:37:38,931 INFO L475 AbstractCegarLoop]: Abstraction has 2733 states and 3336 transitions. [2019-10-02 17:37:38,931 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 17:37:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 3336 transitions. [2019-10-02 17:37:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-02 17:37:38,938 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:37:38,938 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-02 17:37:38,938 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:37:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:37:38,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2014345303, now seen corresponding path program 1 times [2019-10-02 17:37:38,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:37:38,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:38,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:37:38,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:37:38,943 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:37:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:37:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:37:39,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 17:37:39,108 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 17:37:39,109 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 124 with the following transitions: [2019-10-02 17:37:39,112 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [383], [385], [863], [867], [876], [880], [882], [887], [888], [889], [891], [892] [2019-10-02 17:37:39,206 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 17:37:39,208 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 17:48:59,365 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 17:48:59,368 INFO L272 AbstractInterpreter]: Visited 92 different actions 268 times. Merged at 6 different actions 12 times. Never widened. Performed 713 root evaluator evaluations with a maximum evaluation depth of 18. Performed 713 inverse root evaluator evaluations with a maximum inverse evaluation depth of 18. Found 3 fixpoints after 2 different actions. Largest state had 38 variables. [2019-10-02 17:48:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:48:59,379 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates