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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:02:28,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:02:28,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:02:28,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-14 22:02:28,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:02:28,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:02:28,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:02:28,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:02:28,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:02:28,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:02:28,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:02:28,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:02:28,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:02:28,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:02:28,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:02:28,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:02:28,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:02:28,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:02:28,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:02:28,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:02:28,537 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 [2019-10-14 22:02:28,552 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:02:28,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:02:28,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:02:28,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:02:28,554 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:02:28,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:02:28,555 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:02:28,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:02:28,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:02:28,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:02:28,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:02:28,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:02:28,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:02:28,556 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:02:28,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:02:28,556 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:02:28,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:02:28,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:02:28,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:02:28,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:02:28,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:02:28,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:02:28,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:02:28,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:02:28,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:02:28,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:02:28,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:02:28,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:02:28,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:02:28,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:02:28,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:02:28,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:02:28,859 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:02:28,860 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:02:28,860 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label52.c [2019-10-14 22:02:28,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15bdf41f/0b2abbdb6f3344a6b94d1712a47f3025/FLAG3a2426550 [2019-10-14 22:02:29,498 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:02:29,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label52.c [2019-10-14 22:02:29,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15bdf41f/0b2abbdb6f3344a6b94d1712a47f3025/FLAG3a2426550 [2019-10-14 22:02:29,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15bdf41f/0b2abbdb6f3344a6b94d1712a47f3025 [2019-10-14 22:02:29,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:02:29,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:02:29,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:02:29,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:02:29,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:02:29,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:02:29" (1/1) ... [2019-10-14 22:02:29,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb1ed1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:29, skipping insertion in model container [2019-10-14 22:02:29,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:02:29" (1/1) ... [2019-10-14 22:02:29,796 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:02:29,868 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:02:30,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:02:30,388 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:02:30,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:02:30,699 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:02:30,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30 WrapperNode [2019-10-14 22:02:30,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:02:30,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:02:30,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:02:30,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:02:30,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (1/1) ... [2019-10-14 22:02:30,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (1/1) ... [2019-10-14 22:02:30,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (1/1) ... [2019-10-14 22:02:30,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (1/1) ... [2019-10-14 22:02:30,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (1/1) ... [2019-10-14 22:02:30,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (1/1) ... [2019-10-14 22:02:30,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (1/1) ... [2019-10-14 22:02:30,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:02:30,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:02:30,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:02:30,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:02:30,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (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 [2019-10-14 22:02:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:02:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:02:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:02:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:02:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:02:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:02:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:02:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:02:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:02:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:02:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:02:32,675 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:02:32,676 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:02:32,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:02:32 BoogieIcfgContainer [2019-10-14 22:02:32,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:02:32,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:02:32,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:02:32,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:02:32,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:02:29" (1/3) ... [2019-10-14 22:02:32,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f440f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:02:32, skipping insertion in model container [2019-10-14 22:02:32,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:30" (2/3) ... [2019-10-14 22:02:32,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f440f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:02:32, skipping insertion in model container [2019-10-14 22:02:32,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:02:32" (3/3) ... [2019-10-14 22:02:32,686 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label52.c [2019-10-14 22:02:32,695 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:02:32,704 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:02:32,716 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:02:32,745 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:02:32,745 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:02:32,745 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:02:32,746 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:02:32,746 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:02:32,746 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:02:32,746 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:02:32,746 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:02:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-10-14 22:02:32,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 22:02:32,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:32,787 INFO L380 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] [2019-10-14 22:02:32,789 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:32,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2120821501, now seen corresponding path program 1 times [2019-10-14 22:02:32,803 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:32,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687014201] [2019-10-14 22:02:32,804 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:32,804 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:32,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:02:33,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687014201] [2019-10-14 22:02:33,172 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:02:33,173 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:02:33,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680480115] [2019-10-14 22:02:33,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:02:33,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:33,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:02:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:02:33,203 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2019-10-14 22:02:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:35,723 INFO L93 Difference]: Finished difference Result 886 states and 1613 transitions. [2019-10-14 22:02:35,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:02:35,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-10-14 22:02:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:35,747 INFO L225 Difference]: With dead ends: 886 [2019-10-14 22:02:35,747 INFO L226 Difference]: Without dead ends: 564 [2019-10-14 22:02:35,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-14 22:02:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558. [2019-10-14 22:02:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-14 22:02:35,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2019-10-14 22:02:35,855 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 28 [2019-10-14 22:02:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:35,855 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2019-10-14 22:02:35,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:02:35,856 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2019-10-14 22:02:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-14 22:02:35,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:35,862 INFO L380 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, 1, 1] [2019-10-14 22:02:35,862 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:35,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1199804154, now seen corresponding path program 1 times [2019-10-14 22:02:35,863 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:35,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927127620] [2019-10-14 22:02:35,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:35,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:35,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:02:36,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927127620] [2019-10-14 22:02:36,286 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:02:36,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:02:36,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785047349] [2019-10-14 22:02:36,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:02:36,292 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:36,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:02:36,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:02:36,293 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand 9 states. [2019-10-14 22:02:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:38,356 INFO L93 Difference]: Finished difference Result 1320 states and 2174 transitions. [2019-10-14 22:02:38,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:02:38,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 114 [2019-10-14 22:02:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:38,365 INFO L225 Difference]: With dead ends: 1320 [2019-10-14 22:02:38,365 INFO L226 Difference]: Without dead ends: 768 [2019-10-14 22:02:38,368 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:02:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-14 22:02:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 566. [2019-10-14 22:02:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-10-14 22:02:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 819 transitions. [2019-10-14 22:02:38,407 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 819 transitions. Word has length 114 [2019-10-14 22:02:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:38,408 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 819 transitions. [2019-10-14 22:02:38,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:02:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 819 transitions. [2019-10-14 22:02:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 22:02:38,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:38,411 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:38,412 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:38,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:38,412 INFO L82 PathProgramCache]: Analyzing trace with hash 217144121, now seen corresponding path program 1 times [2019-10-14 22:02:38,413 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:38,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703983947] [2019-10-14 22:02:38,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:38,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:38,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:02:38,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703983947] [2019-10-14 22:02:38,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960998772] [2019-10-14 22:02:38,596 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 [2019-10-14 22:02:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:38,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:02:38,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:02:38,859 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:38,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:02:38,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728870810] [2019-10-14 22:02:38,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:02:38,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:38,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:02:38,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:38,871 INFO L87 Difference]: Start difference. First operand 566 states and 819 transitions. Second operand 3 states. [2019-10-14 22:02:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:39,785 INFO L93 Difference]: Finished difference Result 1680 states and 2467 transitions. [2019-10-14 22:02:39,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:02:39,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-14 22:02:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:39,799 INFO L225 Difference]: With dead ends: 1680 [2019-10-14 22:02:39,799 INFO L226 Difference]: Without dead ends: 1120 [2019-10-14 22:02:39,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2019-10-14 22:02:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 934. [2019-10-14 22:02:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2019-10-14 22:02:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1279 transitions. [2019-10-14 22:02:39,861 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1279 transitions. Word has length 123 [2019-10-14 22:02:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:39,864 INFO L462 AbstractCegarLoop]: Abstraction has 934 states and 1279 transitions. [2019-10-14 22:02:39,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:02:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1279 transitions. [2019-10-14 22:02:39,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-14 22:02:39,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:39,880 INFO L380 BasicCegarLoop]: trace histogram [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, 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] [2019-10-14 22:02:40,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:40,084 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:40,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:40,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1938372875, now seen corresponding path program 1 times [2019-10-14 22:02:40,085 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:40,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496925129] [2019-10-14 22:02:40,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:40,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:40,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-14 22:02:40,421 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496925129] [2019-10-14 22:02:40,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037643533] [2019-10-14 22:02:40,423 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 [2019-10-14 22:02:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:40,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:02:40,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-14 22:02:40,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:40,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:02:40,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918881950] [2019-10-14 22:02:40,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:02:40,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:40,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:02:40,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:40,596 INFO L87 Difference]: Start difference. First operand 934 states and 1279 transitions. Second operand 3 states. [2019-10-14 22:02:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:41,603 INFO L93 Difference]: Finished difference Result 2414 states and 3392 transitions. [2019-10-14 22:02:41,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:02:41,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2019-10-14 22:02:41,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:41,639 INFO L225 Difference]: With dead ends: 2414 [2019-10-14 22:02:41,639 INFO L226 Difference]: Without dead ends: 1486 [2019-10-14 22:02:41,642 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2019-10-14 22:02:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1304. [2019-10-14 22:02:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2019-10-14 22:02:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1748 transitions. [2019-10-14 22:02:41,686 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1748 transitions. Word has length 226 [2019-10-14 22:02:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:41,687 INFO L462 AbstractCegarLoop]: Abstraction has 1304 states and 1748 transitions. [2019-10-14 22:02:41,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:02:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1748 transitions. [2019-10-14 22:02:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-14 22:02:41,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:41,693 INFO L380 BasicCegarLoop]: trace histogram [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, 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] [2019-10-14 22:02:41,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:41,897 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:41,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1616242422, now seen corresponding path program 1 times [2019-10-14 22:02:41,898 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:41,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641733090] [2019-10-14 22:02:41,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:41,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:41,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-14 22:02:42,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641733090] [2019-10-14 22:02:42,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835089836] [2019-10-14 22:02:42,176 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 [2019-10-14 22:02:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:42,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:02:42,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-14 22:02:42,325 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:42,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:02:42,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971743039] [2019-10-14 22:02:42,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:02:42,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:02:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:42,328 INFO L87 Difference]: Start difference. First operand 1304 states and 1748 transitions. Second operand 3 states. [2019-10-14 22:02:43,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:43,272 INFO L93 Difference]: Finished difference Result 3156 states and 4351 transitions. [2019-10-14 22:02:43,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:02:43,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2019-10-14 22:02:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:43,289 INFO L225 Difference]: With dead ends: 3156 [2019-10-14 22:02:43,290 INFO L226 Difference]: Without dead ends: 1858 [2019-10-14 22:02:43,294 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2019-10-14 22:02:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1674. [2019-10-14 22:02:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2019-10-14 22:02:43,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2298 transitions. [2019-10-14 22:02:43,360 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2298 transitions. Word has length 245 [2019-10-14 22:02:43,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:43,361 INFO L462 AbstractCegarLoop]: Abstraction has 1674 states and 2298 transitions. [2019-10-14 22:02:43,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:02:43,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2298 transitions. [2019-10-14 22:02:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-14 22:02:43,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:43,367 INFO L380 BasicCegarLoop]: trace histogram [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, 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] [2019-10-14 22:02:43,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:43,572 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1603017994, now seen corresponding path program 1 times [2019-10-14 22:02:43,573 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:43,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675798357] [2019-10-14 22:02:43,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:43,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:43,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 131 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:02:43,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675798357] [2019-10-14 22:02:43,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209167109] [2019-10-14 22:02:43,962 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 [2019-10-14 22:02:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:44,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 22:02:44,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:44,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:02:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-14 22:02:44,419 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:44,419 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-10-14 22:02:44,419 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968410490] [2019-10-14 22:02:44,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:02:44,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:44,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:02:44,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:02:44,422 INFO L87 Difference]: Start difference. First operand 1674 states and 2298 transitions. Second operand 5 states. [2019-10-14 22:02:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:45,954 INFO L93 Difference]: Finished difference Result 3930 states and 5406 transitions. [2019-10-14 22:02:45,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:02:45,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2019-10-14 22:02:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:45,971 INFO L225 Difference]: With dead ends: 3930 [2019-10-14 22:02:45,971 INFO L226 Difference]: Without dead ends: 2262 [2019-10-14 22:02:45,976 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-14 22:02:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2019-10-14 22:02:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2070. [2019-10-14 22:02:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2019-10-14 22:02:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2743 transitions. [2019-10-14 22:02:46,043 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2743 transitions. Word has length 251 [2019-10-14 22:02:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:46,043 INFO L462 AbstractCegarLoop]: Abstraction has 2070 states and 2743 transitions. [2019-10-14 22:02:46,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:02:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2743 transitions. [2019-10-14 22:02:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2019-10-14 22:02:46,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:46,051 INFO L380 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:46,254 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:46,255 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:46,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1140395773, now seen corresponding path program 1 times [2019-10-14 22:02:46,256 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:46,256 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337409717] [2019-10-14 22:02:46,257 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:46,257 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:46,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 73 proven. 262 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 22:02:47,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337409717] [2019-10-14 22:02:47,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987129531] [2019-10-14 22:02:47,523 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 [2019-10-14 22:02:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:47,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-14 22:02:47,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:47,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-14 22:02:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 267 proven. 53 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-14 22:02:47,927 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:02:47,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 16 [2019-10-14 22:02:47,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904675122] [2019-10-14 22:02:47,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-14 22:02:47,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:47,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-14 22:02:47,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:02:47,930 INFO L87 Difference]: Start difference. First operand 2070 states and 2743 transitions. Second operand 16 states. [2019-10-14 22:02:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:51,845 INFO L93 Difference]: Finished difference Result 4460 states and 5930 transitions. [2019-10-14 22:02:51,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 22:02:51,846 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 335 [2019-10-14 22:02:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:51,857 INFO L225 Difference]: With dead ends: 4460 [2019-10-14 22:02:51,857 INFO L226 Difference]: Without dead ends: 2349 [2019-10-14 22:02:51,864 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2019-10-14 22:02:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2019-10-14 22:02:51,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2268. [2019-10-14 22:02:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2268 states. [2019-10-14 22:02:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 2754 transitions. [2019-10-14 22:02:51,924 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 2754 transitions. Word has length 335 [2019-10-14 22:02:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:51,925 INFO L462 AbstractCegarLoop]: Abstraction has 2268 states and 2754 transitions. [2019-10-14 22:02:51,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-14 22:02:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 2754 transitions. [2019-10-14 22:02:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2019-10-14 22:02:51,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:51,933 INFO L380 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:52,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:52,138 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:52,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1826153040, now seen corresponding path program 1 times [2019-10-14 22:02:52,139 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:52,140 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712175722] [2019-10-14 22:02:52,140 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:52,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:52,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 262 proven. 22 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-10-14 22:02:52,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712175722] [2019-10-14 22:02:52,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642984423] [2019-10-14 22:02:52,630 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 [2019-10-14 22:02:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:52,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 22:02:52,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:52,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 22:02:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-14 22:02:52,879 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:52,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-10-14 22:02:52,879 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130121237] [2019-10-14 22:02:52,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:02:52,880 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:52,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:02:52,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:02:52,886 INFO L87 Difference]: Start difference. First operand 2268 states and 2754 transitions. Second operand 5 states. [2019-10-14 22:02:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:54,024 INFO L93 Difference]: Finished difference Result 5098 states and 6238 transitions. [2019-10-14 22:02:54,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:02:54,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2019-10-14 22:02:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:54,036 INFO L225 Difference]: With dead ends: 5098 [2019-10-14 22:02:54,036 INFO L226 Difference]: Without dead ends: 2836 [2019-10-14 22:02:54,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-10-14 22:02:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2019-10-14 22:02:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2832. [2019-10-14 22:02:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2832 states. [2019-10-14 22:02:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3446 transitions. [2019-10-14 22:02:54,107 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3446 transitions. Word has length 360 [2019-10-14 22:02:54,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:54,107 INFO L462 AbstractCegarLoop]: Abstraction has 2832 states and 3446 transitions. [2019-10-14 22:02:54,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:02:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3446 transitions. [2019-10-14 22:02:54,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2019-10-14 22:02:54,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:54,118 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:54,322 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:54,323 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:54,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1132852189, now seen corresponding path program 1 times [2019-10-14 22:02:54,323 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:54,323 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262674286] [2019-10-14 22:02:54,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:54,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:54,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 310 proven. 110 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2019-10-14 22:02:55,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262674286] [2019-10-14 22:02:55,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748091566] [2019-10-14 22:02:55,228 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 [2019-10-14 22:02:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:55,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 22:02:55,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 612 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-10-14 22:02:55,596 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:02:55,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 9 [2019-10-14 22:02:55,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717996777] [2019-10-14 22:02:55,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:02:55,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:55,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:02:55,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:02:55,598 INFO L87 Difference]: Start difference. First operand 2832 states and 3446 transitions. Second operand 9 states. [2019-10-14 22:02:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:57,673 INFO L93 Difference]: Finished difference Result 5490 states and 6736 transitions. [2019-10-14 22:02:57,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 22:02:57,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 470 [2019-10-14 22:02:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:57,685 INFO L225 Difference]: With dead ends: 5490 [2019-10-14 22:02:57,685 INFO L226 Difference]: Without dead ends: 2846 [2019-10-14 22:02:57,691 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 483 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:02:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2019-10-14 22:02:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2842. [2019-10-14 22:02:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2019-10-14 22:02:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3315 transitions. [2019-10-14 22:02:57,751 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3315 transitions. Word has length 470 [2019-10-14 22:02:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:57,751 INFO L462 AbstractCegarLoop]: Abstraction has 2842 states and 3315 transitions. [2019-10-14 22:02:57,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:02:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3315 transitions. [2019-10-14 22:02:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2019-10-14 22:02:57,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:57,759 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:57,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:57,965 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:57,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash 684069276, now seen corresponding path program 1 times [2019-10-14 22:02:57,965 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:57,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826599472] [2019-10-14 22:02:57,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:57,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:57,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 423 proven. 118 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2019-10-14 22:02:59,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826599472] [2019-10-14 22:02:59,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864914366] [2019-10-14 22:02:59,363 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 [2019-10-14 22:02:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:59,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-14 22:02:59,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:59,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-14 22:03:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 804 proven. 2 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2019-10-14 22:03:00,140 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:03:00,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 12 [2019-10-14 22:03:00,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208159004] [2019-10-14 22:03:00,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 22:03:00,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:00,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 22:03:00,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:03:00,143 INFO L87 Difference]: Start difference. First operand 2842 states and 3315 transitions. Second operand 12 states. [2019-10-14 22:03:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:02,391 INFO L93 Difference]: Finished difference Result 5780 states and 6763 transitions. [2019-10-14 22:03:02,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:03:02,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 554 [2019-10-14 22:03:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:02,403 INFO L225 Difference]: With dead ends: 5780 [2019-10-14 22:03:02,403 INFO L226 Difference]: Without dead ends: 3085 [2019-10-14 22:03:02,408 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 573 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 22:03:02,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2019-10-14 22:03:02,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2834. [2019-10-14 22:03:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2834 states. [2019-10-14 22:03:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 3182 transitions. [2019-10-14 22:03:02,467 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 3182 transitions. Word has length 554 [2019-10-14 22:03:02,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:02,468 INFO L462 AbstractCegarLoop]: Abstraction has 2834 states and 3182 transitions. [2019-10-14 22:03:02,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 22:03:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 3182 transitions. [2019-10-14 22:03:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2019-10-14 22:03:02,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:02,476 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:03:02,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:02,680 INFO L410 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:02,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:02,681 INFO L82 PathProgramCache]: Analyzing trace with hash 965736368, now seen corresponding path program 2 times [2019-10-14 22:03:02,681 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:02,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472481015] [2019-10-14 22:03:02,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:02,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:02,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 646 proven. 235 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2019-10-14 22:03:03,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472481015] [2019-10-14 22:03:03,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746432747] [2019-10-14 22:03:03,969 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-10-14 22:03:04,136 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 22:03:04,137 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 22:03:04,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 22:03:04,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:03:04,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:03:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 856 proven. 2 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2019-10-14 22:03:04,416 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:03:04,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17 [2019-10-14 22:03:04,417 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755097402] [2019-10-14 22:03:04,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-14 22:03:04,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:04,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-14 22:03:04,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:03:04,419 INFO L87 Difference]: Start difference. First operand 2834 states and 3182 transitions. Second operand 17 states.