/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/Problem14_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:13:44,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:13:44,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:13:44,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:13:44,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:13:44,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:13:44,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:13:44,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:13:44,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:13:44,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:13:44,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:13:44,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:13:44,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:13:44,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:13:44,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:13:44,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:13:44,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:13:44,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:13:44,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:13:44,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:13:44,331 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 19:13:44,344 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:13:44,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:13:44,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:13:44,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:13:44,346 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:13:44,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:13:44,346 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:13:44,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:13:44,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:13:44,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:13:44,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:13:44,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:13:44,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:13:44,348 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:13:44,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:13:44,348 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:13:44,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:13:44,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:13:44,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:13:44,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:13:44,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:13:44,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:13:44,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:13:44,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:13:44,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:13:44,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:13:44,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:13:44,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:13:44,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:13:44,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:13:44,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:13:44,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:13:44,644 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:13:44,644 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:13:44,645 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label32.c [2019-11-06 19:13:44,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65f134bb/75c6aa1b07ea4be2bec96f522886ab76/FLAG1c9f571a0 [2019-11-06 19:13:45,423 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:13:45,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label32.c [2019-11-06 19:13:45,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65f134bb/75c6aa1b07ea4be2bec96f522886ab76/FLAG1c9f571a0 [2019-11-06 19:13:45,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65f134bb/75c6aa1b07ea4be2bec96f522886ab76 [2019-11-06 19:13:45,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:13:45,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:13:45,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:13:45,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:13:45,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:13:45,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:13:45" (1/1) ... [2019-11-06 19:13:45,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544ba177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:45, skipping insertion in model container [2019-11-06 19:13:45,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:13:45" (1/1) ... [2019-11-06 19:13:45,642 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:13:45,705 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:13:46,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:13:46,484 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:13:46,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:13:46,639 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:13:46,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46 WrapperNode [2019-11-06 19:13:46,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:13:46,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:13:46,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:13:46,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:13:46,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (1/1) ... [2019-11-06 19:13:46,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (1/1) ... [2019-11-06 19:13:46,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (1/1) ... [2019-11-06 19:13:46,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (1/1) ... [2019-11-06 19:13:46,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (1/1) ... [2019-11-06 19:13:46,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (1/1) ... [2019-11-06 19:13:46,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (1/1) ... [2019-11-06 19:13:46,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:13:46,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:13:46,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:13:46,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:13:46,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (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 19:13:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:13:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:13:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:13:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:13:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:13:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:13:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:13:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:13:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:13:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:13:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:13:48,439 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:13:48,440 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:13:48,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:13:48 BoogieIcfgContainer [2019-11-06 19:13:48,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:13:48,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:13:48,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:13:48,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:13:48,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:13:45" (1/3) ... [2019-11-06 19:13:48,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592820ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:13:48, skipping insertion in model container [2019-11-06 19:13:48,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:46" (2/3) ... [2019-11-06 19:13:48,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592820ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:13:48, skipping insertion in model container [2019-11-06 19:13:48,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:13:48" (3/3) ... [2019-11-06 19:13:48,460 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label32.c [2019-11-06 19:13:48,473 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:13:48,483 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:13:48,495 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:13:48,524 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:13:48,525 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:13:48,525 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:13:48,525 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:13:48,525 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:13:48,526 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:13:48,526 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:13:48,526 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:13:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-11-06 19:13:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-06 19:13:48,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:13:48,561 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, 1] [2019-11-06 19:13:48,562 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:13:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:13:48,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1416126934, now seen corresponding path program 1 times [2019-11-06 19:13:48,577 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:13:48,578 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009726396] [2019-11-06 19:13:48,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:13:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:49,014 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 19:13:49,015 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009726396] [2019-11-06 19:13:49,017 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:13:49,017 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:13:49,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084911455] [2019-11-06 19:13:49,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:13:49,025 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:13:49,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:13:49,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:13:49,044 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2019-11-06 19:13:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:13:51,854 INFO L93 Difference]: Finished difference Result 902 states and 1627 transitions. [2019-11-06 19:13:51,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:13:51,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2019-11-06 19:13:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:13:51,881 INFO L225 Difference]: With dead ends: 902 [2019-11-06 19:13:51,881 INFO L226 Difference]: Without dead ends: 564 [2019-11-06 19:13:51,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:13:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-11-06 19:13:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2019-11-06 19:13:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-11-06 19:13:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 782 transitions. [2019-11-06 19:13:51,984 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 782 transitions. Word has length 61 [2019-11-06 19:13:51,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:13:51,984 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 782 transitions. [2019-11-06 19:13:51,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:13:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 782 transitions. [2019-11-06 19:13:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-06 19:13:51,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:13:51,995 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, 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] [2019-11-06 19:13:51,996 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:13:51,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:13:51,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1588363546, now seen corresponding path program 1 times [2019-11-06 19:13:51,997 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:13:51,997 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372736198] [2019-11-06 19:13:51,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:13:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:13:52,357 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372736198] [2019-11-06 19:13:52,358 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214066430] [2019-11-06 19:13:52,358 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 19:13:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:52,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:13:52,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:13:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:13:52,585 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:13:52,585 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:13:52,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266204421] [2019-11-06 19:13:52,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:13:52,588 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:13:52,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:13:52,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:13:52,589 INFO L87 Difference]: Start difference. First operand 560 states and 782 transitions. Second operand 3 states. [2019-11-06 19:13:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:13:53,577 INFO L93 Difference]: Finished difference Result 1666 states and 2356 transitions. [2019-11-06 19:13:53,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:13:53,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-11-06 19:13:53,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:13:53,586 INFO L225 Difference]: With dead ends: 1666 [2019-11-06 19:13:53,587 INFO L226 Difference]: Without dead ends: 1112 [2019-11-06 19:13:53,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:13:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-11-06 19:13:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-11-06 19:13:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-11-06 19:13:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1475 transitions. [2019-11-06 19:13:53,645 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1475 transitions. Word has length 173 [2019-11-06 19:13:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:13:53,648 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1475 transitions. [2019-11-06 19:13:53,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:13:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1475 transitions. [2019-11-06 19:13:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-06 19:13:53,661 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:13:53,661 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, 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] [2019-11-06 19:13:53,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:13:53,865 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:13:53,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:13:53,866 INFO L82 PathProgramCache]: Analyzing trace with hash -718358079, now seen corresponding path program 1 times [2019-11-06 19:13:53,866 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:13:53,866 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138448419] [2019-11-06 19:13:53,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:13:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:13:54,225 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138448419] [2019-11-06 19:13:54,225 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491417033] [2019-11-06 19:13:54,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:13:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:54,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:13:54,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:13:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:13:54,362 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:13:54,362 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:13:54,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628543262] [2019-11-06 19:13:54,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:13:54,364 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:13:54,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:13:54,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:13:54,365 INFO L87 Difference]: Start difference. First operand 1112 states and 1475 transitions. Second operand 3 states. [2019-11-06 19:13:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:13:55,393 INFO L93 Difference]: Finished difference Result 3138 states and 4245 transitions. [2019-11-06 19:13:55,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:13:55,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-11-06 19:13:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:13:55,407 INFO L225 Difference]: With dead ends: 3138 [2019-11-06 19:13:55,408 INFO L226 Difference]: Without dead ends: 2032 [2019-11-06 19:13:55,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:13:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2019-11-06 19:13:55,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2032. [2019-11-06 19:13:55,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2032 states. [2019-11-06 19:13:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 2596 transitions. [2019-11-06 19:13:55,483 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 2596 transitions. Word has length 194 [2019-11-06 19:13:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:13:55,484 INFO L462 AbstractCegarLoop]: Abstraction has 2032 states and 2596 transitions. [2019-11-06 19:13:55,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:13:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 2596 transitions. [2019-11-06 19:13:55,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-11-06 19:13:55,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:13:55,491 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, 3, 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] [2019-11-06 19:13:55,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:13:55,695 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:13:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:13:55,696 INFO L82 PathProgramCache]: Analyzing trace with hash -340998247, now seen corresponding path program 1 times [2019-11-06 19:13:55,696 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:13:55,696 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35810946] [2019-11-06 19:13:55,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:13:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-11-06 19:13:56,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35810946] [2019-11-06 19:13:56,108 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414931957] [2019-11-06 19:13:56,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:13:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:56,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:13:56,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:13:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-06 19:13:56,259 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:13:56,259 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2019-11-06 19:13:56,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045476929] [2019-11-06 19:13:56,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:13:56,261 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:13:56,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:13:56,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-06 19:13:56,262 INFO L87 Difference]: Start difference. First operand 2032 states and 2596 transitions. Second operand 3 states. [2019-11-06 19:13:57,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:13:57,247 INFO L93 Difference]: Finished difference Result 4794 states and 6291 transitions. [2019-11-06 19:13:57,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:13:57,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2019-11-06 19:13:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:13:57,264 INFO L225 Difference]: With dead ends: 4794 [2019-11-06 19:13:57,265 INFO L226 Difference]: Without dead ends: 2768 [2019-11-06 19:13:57,270 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-06 19:13:57,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2019-11-06 19:13:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2586. [2019-11-06 19:13:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2019-11-06 19:13:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3315 transitions. [2019-11-06 19:13:57,358 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3315 transitions. Word has length 246 [2019-11-06 19:13:57,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:13:57,359 INFO L462 AbstractCegarLoop]: Abstraction has 2586 states and 3315 transitions. [2019-11-06 19:13:57,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:13:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3315 transitions. [2019-11-06 19:13:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-11-06 19:13:57,368 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:13:57,368 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, 3, 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] [2019-11-06 19:13:57,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:13:57,572 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:13:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:13:57,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1720173374, now seen corresponding path program 1 times [2019-11-06 19:13:57,573 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:13:57,574 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533555481] [2019-11-06 19:13:57,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:13:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:13:57,947 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533555481] [2019-11-06 19:13:57,947 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839614030] [2019-11-06 19:13:57,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:13:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:13:58,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:13:58,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:13:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:13:58,247 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:13:58,247 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-11-06 19:13:58,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935291518] [2019-11-06 19:13:58,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 19:13:58,249 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:13:58,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 19:13:58,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-06 19:13:58,250 INFO L87 Difference]: Start difference. First operand 2586 states and 3315 transitions. Second operand 11 states. [2019-11-06 19:14:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:14:02,785 INFO L93 Difference]: Finished difference Result 8486 states and 11872 transitions. [2019-11-06 19:14:02,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-06 19:14:02,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 255 [2019-11-06 19:14:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:14:02,823 INFO L225 Difference]: With dead ends: 8486 [2019-11-06 19:14:02,823 INFO L226 Difference]: Without dead ends: 5340 [2019-11-06 19:14:02,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2019-11-06 19:14:02,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2019-11-06 19:14:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 4322. [2019-11-06 19:14:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4322 states. [2019-11-06 19:14:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5567 transitions. [2019-11-06 19:14:02,985 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5567 transitions. Word has length 255 [2019-11-06 19:14:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:14:02,986 INFO L462 AbstractCegarLoop]: Abstraction has 4322 states and 5567 transitions. [2019-11-06 19:14:02,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 19:14:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5567 transitions. [2019-11-06 19:14:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2019-11-06 19:14:02,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:14:02,995 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, 3, 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] [2019-11-06 19:14:03,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:03,202 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:14:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:14:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1461339654, now seen corresponding path program 1 times [2019-11-06 19:14:03,203 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:14:03,203 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778713619] [2019-11-06 19:14:03,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:14:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:14:04,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778713619] [2019-11-06 19:14:04,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913883654] [2019-11-06 19:14:04,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:04,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:14:04,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:14:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-11-06 19:14:04,576 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:14:04,576 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2019-11-06 19:14:04,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182952392] [2019-11-06 19:14:04,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:14:04,577 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:14:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:14:04,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:14:04,578 INFO L87 Difference]: Start difference. First operand 4322 states and 5567 transitions. Second operand 3 states. [2019-11-06 19:14:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:14:05,439 INFO L93 Difference]: Finished difference Result 9408 states and 12511 transitions. [2019-11-06 19:14:05,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:14:05,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2019-11-06 19:14:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:14:05,472 INFO L225 Difference]: With dead ends: 9408 [2019-11-06 19:14:05,473 INFO L226 Difference]: Without dead ends: 5458 [2019-11-06 19:14:05,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 271 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:14:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2019-11-06 19:14:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 5082. [2019-11-06 19:14:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5082 states. [2019-11-06 19:14:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 6803 transitions. [2019-11-06 19:14:05,641 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 6803 transitions. Word has length 267 [2019-11-06 19:14:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:14:05,642 INFO L462 AbstractCegarLoop]: Abstraction has 5082 states and 6803 transitions. [2019-11-06 19:14:05,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:14:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 6803 transitions. [2019-11-06 19:14:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-11-06 19:14:05,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:14:05,652 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, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:14:05,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:05,856 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:14:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:14:05,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1459182395, now seen corresponding path program 1 times [2019-11-06 19:14:05,857 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:14:05,857 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47867545] [2019-11-06 19:14:05,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:14:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-11-06 19:14:06,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47867545] [2019-11-06 19:14:06,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042164339] [2019-11-06 19:14:06,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:06,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:14:06,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:14:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-11-06 19:14:06,396 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:14:06,397 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:14:06,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904251634] [2019-11-06 19:14:06,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:14:06,398 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:14:06,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:14:06,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:14:06,399 INFO L87 Difference]: Start difference. First operand 5082 states and 6803 transitions. Second operand 3 states. [2019-11-06 19:14:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:14:07,059 INFO L93 Difference]: Finished difference Result 5084 states and 6804 transitions. [2019-11-06 19:14:07,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:14:07,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 284 [2019-11-06 19:14:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:14:07,087 INFO L225 Difference]: With dead ends: 5084 [2019-11-06 19:14:07,087 INFO L226 Difference]: Without dead ends: 5082 [2019-11-06 19:14:07,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:14:07,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2019-11-06 19:14:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 5082. [2019-11-06 19:14:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5082 states. [2019-11-06 19:14:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 6802 transitions. [2019-11-06 19:14:07,232 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 6802 transitions. Word has length 284 [2019-11-06 19:14:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:14:07,233 INFO L462 AbstractCegarLoop]: Abstraction has 5082 states and 6802 transitions. [2019-11-06 19:14:07,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:14:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 6802 transitions. [2019-11-06 19:14:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-11-06 19:14:07,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:14:07,254 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, 3, 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, 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] [2019-11-06 19:14:07,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:07,467 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:14:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:14:07,468 INFO L82 PathProgramCache]: Analyzing trace with hash 754436966, now seen corresponding path program 1 times [2019-11-06 19:14:07,468 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:14:07,468 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460596719] [2019-11-06 19:14:07,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:14:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 161 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:14:08,534 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460596719] [2019-11-06 19:14:08,535 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937713091] [2019-11-06 19:14:08,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:08,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 19:14:08,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:14:08,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:14:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-06 19:14:08,960 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:14:08,961 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2019-11-06 19:14:08,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891226631] [2019-11-06 19:14:08,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:14:08,962 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:14:08,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:14:08,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:14:08,963 INFO L87 Difference]: Start difference. First operand 5082 states and 6802 transitions. Second operand 5 states. [2019-11-06 19:14:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:14:10,249 INFO L93 Difference]: Finished difference Result 9824 states and 13302 transitions. [2019-11-06 19:14:10,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 19:14:10,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2019-11-06 19:14:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:14:10,276 INFO L225 Difference]: With dead ends: 9824 [2019-11-06 19:14:10,277 INFO L226 Difference]: Without dead ends: 5106 [2019-11-06 19:14:10,295 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-11-06 19:14:10,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5106 states. [2019-11-06 19:14:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5106 to 5098. [2019-11-06 19:14:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5098 states. [2019-11-06 19:14:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 6773 transitions. [2019-11-06 19:14:10,415 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 6773 transitions. Word has length 315 [2019-11-06 19:14:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:14:10,415 INFO L462 AbstractCegarLoop]: Abstraction has 5098 states and 6773 transitions. [2019-11-06 19:14:10,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:14:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 6773 transitions. [2019-11-06 19:14:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2019-11-06 19:14:10,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:14:10,437 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-11-06 19:14:10,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:10,646 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:14:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:14:10,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1624153950, now seen corresponding path program 1 times [2019-11-06 19:14:10,646 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:14:10,647 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466698925] [2019-11-06 19:14:10,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:14:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 162 proven. 130 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-11-06 19:14:11,056 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466698925] [2019-11-06 19:14:11,057 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852329775] [2019-11-06 19:14:11,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:11,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 19:14:11,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:14:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-11-06 19:14:11,539 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:14:11,539 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2019-11-06 19:14:11,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50820108] [2019-11-06 19:14:11,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:14:11,544 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:14:11,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:14:11,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 19:14:11,545 INFO L87 Difference]: Start difference. First operand 5098 states and 6773 transitions. Second operand 5 states. [2019-11-06 19:14:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:14:12,635 INFO L93 Difference]: Finished difference Result 8518 states and 11450 transitions. [2019-11-06 19:14:12,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:14:12,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 385 [2019-11-06 19:14:12,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:14:12,649 INFO L225 Difference]: With dead ends: 8518 [2019-11-06 19:14:12,650 INFO L226 Difference]: Without dead ends: 3792 [2019-11-06 19:14:12,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 387 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:14:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2019-11-06 19:14:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3726. [2019-11-06 19:14:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3726 states. [2019-11-06 19:14:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 4417 transitions. [2019-11-06 19:14:12,733 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 4417 transitions. Word has length 385 [2019-11-06 19:14:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:14:12,734 INFO L462 AbstractCegarLoop]: Abstraction has 3726 states and 4417 transitions. [2019-11-06 19:14:12,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:14:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 4417 transitions. [2019-11-06 19:14:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2019-11-06 19:14:12,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:14:12,745 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-11-06 19:14:12,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:12,958 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:14:12,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:14:12,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1426525150, now seen corresponding path program 1 times [2019-11-06 19:14:12,959 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:14:12,959 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057465442] [2019-11-06 19:14:12,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:14:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 172 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-06 19:14:14,326 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057465442] [2019-11-06 19:14:14,326 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939124116] [2019-11-06 19:14:14,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:14:14,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-06 19:14:14,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:14:14,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-06 19:14:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 334 proven. 53 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-06 19:14:15,021 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:14:15,021 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 16 [2019-11-06 19:14:15,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115188501] [2019-11-06 19:14:15,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-06 19:14:15,024 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:14:15,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-06 19:14:15,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:14:15,025 INFO L87 Difference]: Start difference. First operand 3726 states and 4417 transitions. Second operand 16 states. [2019-11-06 19:14:19,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:14:19,075 INFO L93 Difference]: Finished difference Result 7359 states and 8769 transitions. [2019-11-06 19:14:19,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-06 19:14:19,076 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 399 [2019-11-06 19:14:19,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:14:19,087 INFO L225 Difference]: With dead ends: 7359 [2019-11-06 19:14:19,087 INFO L226 Difference]: Without dead ends: 3958 [2019-11-06 19:14:19,094 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2019-11-06 19:14:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2019-11-06 19:14:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3916. [2019-11-06 19:14:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3916 states. [2019-11-06 19:14:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 4433 transitions. [2019-11-06 19:14:19,155 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 4433 transitions. Word has length 399 [2019-11-06 19:14:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:14:19,155 INFO L462 AbstractCegarLoop]: Abstraction has 3916 states and 4433 transitions. [2019-11-06 19:14:19,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-06 19:14:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 4433 transitions. [2019-11-06 19:14:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2019-11-06 19:14:19,168 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:14:19,169 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 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] [2019-11-06 19:14:19,375 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:14:19,376 INFO L410 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:14:19,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:14:19,376 INFO L82 PathProgramCache]: Analyzing trace with hash -557225715, now seen corresponding path program 1 times [2019-11-06 19:14:19,376 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:14:19,376 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134956938] [2019-11-06 19:14:19,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:14:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat