/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/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:18:51,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:18:51,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:18:51,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:18:51,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:18:51,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:18:51,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:18:51,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:18:51,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:18:51,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:18:51,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:18:51,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:18:51,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:18:51,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:18:51,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:18:51,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:18:51,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:18:51,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:18:51,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:18:51,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:18:51,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:18:51,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:18:51,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:18:51,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:18:51,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:18:51,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:18:51,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:18:51,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:18:51,754 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 [2020-08-22 16:18:51,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:18:51,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:18:51,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:18:51,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:18:51,785 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:18:51,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:18:51,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:18:51,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:18:51,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:18:51,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:18:51,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:18:51,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:18:51,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:18:51,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:18:51,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:18:51,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:18:51,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:18:51,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:18:51,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:18:51,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:18:51,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:18:51,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:18:51,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:18:51,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:18:51,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:18:51,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:18:51,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:18:51,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:18:51,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:18:51,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:18:52,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:18:52,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:18:52,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:18:52,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:18:52,112 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:18:52,113 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-08-22 16:18:52,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37befb74/203f1574d3b64179abfa59387994fbf6/FLAG38022b328 [2020-08-22 16:18:52,663 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:18:52,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-08-22 16:18:52,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37befb74/203f1574d3b64179abfa59387994fbf6/FLAG38022b328 [2020-08-22 16:18:53,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37befb74/203f1574d3b64179abfa59387994fbf6 [2020-08-22 16:18:53,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:18:53,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:18:53,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:18:53,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:18:53,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:18:53,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53, skipping insertion in model container [2020-08-22 16:18:53,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:18:53,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:18:53,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:18:53,290 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:18:53,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:18:53,328 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:18:53,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53 WrapperNode [2020-08-22 16:18:53,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:18:53,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:18:53,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:18:53,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:18:53,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (1/1) ... [2020-08-22 16:18:53,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:18:53,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:18:53,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:18:53,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:18:53,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (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 [2020-08-22 16:18:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:18:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:18:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-08-22 16:18:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-08-22 16:18:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:18:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:18:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:18:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-08-22 16:18:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-08-22 16:18:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:18:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:18:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:18:53,715 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:18:53,715 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:18:53,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:18:53 BoogieIcfgContainer [2020-08-22 16:18:53,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:18:53,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:18:53,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:18:53,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:18:53,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:18:53" (1/3) ... [2020-08-22 16:18:53,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35da1b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:18:53, skipping insertion in model container [2020-08-22 16:18:53,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:53" (2/3) ... [2020-08-22 16:18:53,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35da1b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:18:53, skipping insertion in model container [2020-08-22 16:18:53,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:18:53" (3/3) ... [2020-08-22 16:18:53,728 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-08-22 16:18:53,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:18:53,746 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:18:53,762 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:18:53,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:18:53,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:18:53,800 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:18:53,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:18:53,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:18:53,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:18:53,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:18:53,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:18:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-22 16:18:53,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:18:53,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:53,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:53,848 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:53,856 INFO L82 PathProgramCache]: Analyzing trace with hash -2122072279, now seen corresponding path program 1 times [2020-08-22 16:18:53,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:53,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868983962] [2020-08-22 16:18:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:18:54,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868983962] [2020-08-22 16:18:54,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:18:54,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:18:54,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043115434] [2020-08-22 16:18:54,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:18:54,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:54,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:18:54,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:18:54,204 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states. [2020-08-22 16:18:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:54,335 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-08-22 16:18:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:18:54,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-22 16:18:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:54,349 INFO L225 Difference]: With dead ends: 41 [2020-08-22 16:18:54,349 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 16:18:54,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:18:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 16:18:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-22 16:18:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 16:18:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-08-22 16:18:54,397 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2020-08-22 16:18:54,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:54,398 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-08-22 16:18:54,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:18:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-08-22 16:18:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 16:18:54,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:54,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:54,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:18:54,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:54,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:54,402 INFO L82 PathProgramCache]: Analyzing trace with hash -612070348, now seen corresponding path program 1 times [2020-08-22 16:18:54,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:54,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924813755] [2020-08-22 16:18:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:18:54,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924813755] [2020-08-22 16:18:54,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:18:54,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:18:54,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157534869] [2020-08-22 16:18:54,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:18:54,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:54,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:18:54,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:18:54,596 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2020-08-22 16:18:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:54,700 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-08-22 16:18:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:18:54,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-08-22 16:18:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:54,703 INFO L225 Difference]: With dead ends: 33 [2020-08-22 16:18:54,703 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 16:18:54,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:18:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 16:18:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-08-22 16:18:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 16:18:54,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-08-22 16:18:54,713 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2020-08-22 16:18:54,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:54,714 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-08-22 16:18:54,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:18:54,714 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-08-22 16:18:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 16:18:54,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:54,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:54,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:18:54,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:54,717 INFO L82 PathProgramCache]: Analyzing trace with hash -592576498, now seen corresponding path program 1 times [2020-08-22 16:18:54,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:54,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187618174] [2020-08-22 16:18:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:18:54,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187618174] [2020-08-22 16:18:54,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:18:54,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:18:54,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460864869] [2020-08-22 16:18:54,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:18:54,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:54,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:18:54,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:18:54,794 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-08-22 16:18:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:54,859 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-22 16:18:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:18:54,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-22 16:18:54,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:54,862 INFO L225 Difference]: With dead ends: 41 [2020-08-22 16:18:54,862 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 16:18:54,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:18:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 16:18:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-08-22 16:18:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 16:18:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-08-22 16:18:54,870 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-08-22 16:18:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:54,870 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-08-22 16:18:54,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:18:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-08-22 16:18:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:18:54,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:54,872 INFO L422 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] [2020-08-22 16:18:54,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:18:54,872 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:54,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:54,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1306118367, now seen corresponding path program 1 times [2020-08-22 16:18:54,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:54,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874437932] [2020-08-22 16:18:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:18:55,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874437932] [2020-08-22 16:18:55,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:18:55,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 16:18:55,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212041010] [2020-08-22 16:18:55,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:18:55,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:55,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:18:55,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:18:55,103 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 9 states. [2020-08-22 16:18:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:55,247 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-08-22 16:18:55,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:18:55,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-22 16:18:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:55,249 INFO L225 Difference]: With dead ends: 36 [2020-08-22 16:18:55,249 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 16:18:55,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:18:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 16:18:55,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 16:18:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:18:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-22 16:18:55,257 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-08-22 16:18:55,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:55,258 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-22 16:18:55,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:18:55,258 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-22 16:18:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 16:18:55,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:55,260 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:18:55,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:18:55,261 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1571291849, now seen corresponding path program 1 times [2020-08-22 16:18:55,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:55,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856677469] [2020-08-22 16:18:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:18:55,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856677469] [2020-08-22 16:18:55,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:18:55,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:18:55,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806659039] [2020-08-22 16:18:55,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:18:55,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:55,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:18:55,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:18:55,367 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-22 16:18:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:55,404 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-08-22 16:18:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:18:55,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-22 16:18:55,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:55,406 INFO L225 Difference]: With dead ends: 42 [2020-08-22 16:18:55,406 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 16:18:55,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:18:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 16:18:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 16:18:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:18:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-08-22 16:18:55,413 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2020-08-22 16:18:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:55,413 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-08-22 16:18:55,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:18:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-08-22 16:18:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 16:18:55,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:55,415 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:18:55,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 16:18:55,415 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:55,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:55,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1610221656, now seen corresponding path program 1 times [2020-08-22 16:18:55,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:55,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808390544] [2020-08-22 16:18:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 16:18:55,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808390544] [2020-08-22 16:18:55,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144961922] [2020-08-22 16:18:55,666 INFO L95 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 [2020-08-22 16:18:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:55,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2020-08-22 16:18:55,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:55,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:18:55,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:18:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 16:18:56,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:56,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2020-08-22 16:18:56,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227637888] [2020-08-22 16:18:56,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 16:18:56,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:56,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 16:18:56,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:18:56,157 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 15 states. [2020-08-22 16:18:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:56,413 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-08-22 16:18:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:18:56,414 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-08-22 16:18:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:56,415 INFO L225 Difference]: With dead ends: 42 [2020-08-22 16:18:56,415 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 16:18:56,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-08-22 16:18:56,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 16:18:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-08-22 16:18:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 16:18:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-08-22 16:18:56,423 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2020-08-22 16:18:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:56,423 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-08-22 16:18:56,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 16:18:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-08-22 16:18:56,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 16:18:56,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:56,425 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:18:56,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-08-22 16:18:56,626 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:56,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:56,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1417612799, now seen corresponding path program 1 times [2020-08-22 16:18:56,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:56,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059288119] [2020-08-22 16:18:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:56,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 16:18:57,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059288119] [2020-08-22 16:18:57,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537777627] [2020-08-22 16:18:57,010 INFO L95 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 [2020-08-22 16:18:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:57,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2020-08-22 16:18:57,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:57,253 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:18:57,256 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:18:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 16:18:57,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:57,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2020-08-22 16:18:57,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303904769] [2020-08-22 16:18:57,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 16:18:57,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:57,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 16:18:57,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-08-22 16:18:57,439 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 22 states. [2020-08-22 16:18:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:57,891 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-08-22 16:18:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:18:57,891 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2020-08-22 16:18:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:57,894 INFO L225 Difference]: With dead ends: 48 [2020-08-22 16:18:57,894 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 16:18:57,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2020-08-22 16:18:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 16:18:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-08-22 16:18:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 16:18:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-08-22 16:18:57,904 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 36 [2020-08-22 16:18:57,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:57,905 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-08-22 16:18:57,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 16:18:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-08-22 16:18:57,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 16:18:57,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:57,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:58,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:58,107 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:58,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:58,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1668529660, now seen corresponding path program 2 times [2020-08-22 16:18:58,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:58,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009094976] [2020-08-22 16:18:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:58,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:58,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 16:18:58,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009094976] [2020-08-22 16:18:58,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400927187] [2020-08-22 16:18:58,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:18:58,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:18:58,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:58,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 48 conjunts are in the unsatisfiable core [2020-08-22 16:18:58,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:58,595 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:18:58,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:18:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 16:18:58,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:58,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2020-08-22 16:18:58,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733891567] [2020-08-22 16:18:58,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:18:58,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:58,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:18:58,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:18:58,743 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 19 states. [2020-08-22 16:18:59,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:59,202 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-08-22 16:18:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 16:18:59,202 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 43 [2020-08-22 16:18:59,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:59,204 INFO L225 Difference]: With dead ends: 54 [2020-08-22 16:18:59,205 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 16:18:59,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-08-22 16:18:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 16:18:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-08-22 16:18:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 16:18:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-08-22 16:18:59,212 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2020-08-22 16:18:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:59,213 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-08-22 16:18:59,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:18:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-08-22 16:18:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 16:18:59,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:59,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:59,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:59,419 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:59,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:59,419 INFO L82 PathProgramCache]: Analyzing trace with hash -150927713, now seen corresponding path program 2 times [2020-08-22 16:18:59,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:59,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105942797] [2020-08-22 16:18:59,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:59,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:59,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 16:18:59,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105942797] [2020-08-22 16:18:59,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485536029] [2020-08-22 16:18:59,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:18:59,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:18:59,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:59,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 44 conjunts are in the unsatisfiable core [2020-08-22 16:18:59,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:00,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:00,224 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 16:19:00,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:00,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2020-08-22 16:19:00,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316243959] [2020-08-22 16:19:00,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-22 16:19:00,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:00,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-22 16:19:00,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2020-08-22 16:19:00,408 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 30 states. [2020-08-22 16:19:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:01,082 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-08-22 16:19:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 16:19:01,082 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 50 [2020-08-22 16:19:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:01,084 INFO L225 Difference]: With dead ends: 60 [2020-08-22 16:19:01,084 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 16:19:01,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 16:19:01,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 16:19:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2020-08-22 16:19:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 16:19:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-08-22 16:19:01,092 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 50 [2020-08-22 16:19:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:01,093 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-08-22 16:19:01,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-22 16:19:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-08-22 16:19:01,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 16:19:01,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:01,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:01,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:01,310 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:01,311 INFO L82 PathProgramCache]: Analyzing trace with hash -308892384, now seen corresponding path program 3 times [2020-08-22 16:19:01,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:01,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839425455] [2020-08-22 16:19:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-22 16:19:01,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839425455] [2020-08-22 16:19:01,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418307324] [2020-08-22 16:19:01,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:19:01,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-08-22 16:19:01,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:01,802 WARN L261 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 64 conjunts are in the unsatisfiable core [2020-08-22 16:19:01,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:01,910 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:01,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-22 16:19:02,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:02,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 23 [2020-08-22 16:19:02,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524047314] [2020-08-22 16:19:02,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 16:19:02,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:02,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 16:19:02,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-08-22 16:19:02,139 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 23 states. [2020-08-22 16:19:02,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:02,880 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-08-22 16:19:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 16:19:02,881 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-08-22 16:19:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:02,882 INFO L225 Difference]: With dead ends: 66 [2020-08-22 16:19:02,882 INFO L226 Difference]: Without dead ends: 62 [2020-08-22 16:19:02,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 16:19:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-22 16:19:02,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2020-08-22 16:19:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 16:19:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-08-22 16:19:02,891 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 57 [2020-08-22 16:19:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:02,891 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-08-22 16:19:02,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 16:19:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-08-22 16:19:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 16:19:02,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:02,893 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:03,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-08-22 16:19:03,107 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1668346559, now seen corresponding path program 3 times [2020-08-22 16:19:03,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:03,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080181121] [2020-08-22 16:19:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 16:19:03,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080181121] [2020-08-22 16:19:03,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587561455] [2020-08-22 16:19:03,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:19:03,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-08-22 16:19:03,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:03,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 56 conjunts are in the unsatisfiable core [2020-08-22 16:19:03,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:04,199 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:04,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 16:19:04,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:04,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 38 [2020-08-22 16:19:04,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442260645] [2020-08-22 16:19:04,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-22 16:19:04,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:04,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-22 16:19:04,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 16:19:04,393 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 38 states. [2020-08-22 16:19:05,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:05,515 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-08-22 16:19:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 16:19:05,516 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 64 [2020-08-22 16:19:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:05,517 INFO L225 Difference]: With dead ends: 72 [2020-08-22 16:19:05,517 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 16:19:05,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=170, Invalid=2692, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 16:19:05,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 16:19:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2020-08-22 16:19:05,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 16:19:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-08-22 16:19:05,527 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 64 [2020-08-22 16:19:05,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:05,527 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-08-22 16:19:05,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-22 16:19:05,527 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-08-22 16:19:05,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 16:19:05,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:05,529 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:05,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:05,741 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:05,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:05,741 INFO L82 PathProgramCache]: Analyzing trace with hash 353359300, now seen corresponding path program 4 times [2020-08-22 16:19:05,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:05,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511080207] [2020-08-22 16:19:05,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:05,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:05,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-22 16:19:06,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511080207] [2020-08-22 16:19:06,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162019998] [2020-08-22 16:19:06,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:19:06,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:19:06,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:06,471 WARN L261 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 80 conjunts are in the unsatisfiable core [2020-08-22 16:19:06,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:06,618 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:06,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-22 16:19:06,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:06,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 27 [2020-08-22 16:19:06,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035946244] [2020-08-22 16:19:06,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 16:19:06,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:06,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 16:19:06,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-08-22 16:19:06,802 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 27 states. [2020-08-22 16:19:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:07,690 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-08-22 16:19:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 16:19:07,691 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 71 [2020-08-22 16:19:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:07,692 INFO L225 Difference]: With dead ends: 78 [2020-08-22 16:19:07,692 INFO L226 Difference]: Without dead ends: 74 [2020-08-22 16:19:07,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 16:19:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-22 16:19:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2020-08-22 16:19:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-22 16:19:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-08-22 16:19:07,712 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 71 [2020-08-22 16:19:07,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:07,712 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-08-22 16:19:07,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 16:19:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-08-22 16:19:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 16:19:07,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:07,717 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:07,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:07,920 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:07,920 INFO L82 PathProgramCache]: Analyzing trace with hash -165146017, now seen corresponding path program 4 times [2020-08-22 16:19:07,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:07,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67473709] [2020-08-22 16:19:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-08-22 16:19:08,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67473709] [2020-08-22 16:19:08,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472114530] [2020-08-22 16:19:08,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:19:08,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:19:08,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:08,727 WARN L261 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 88 conjunts are in the unsatisfiable core [2020-08-22 16:19:08,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:08,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:08,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-08-22 16:19:09,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:09,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 28 [2020-08-22 16:19:09,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239489020] [2020-08-22 16:19:09,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 16:19:09,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 16:19:09,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-08-22 16:19:09,078 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 28 states. [2020-08-22 16:19:10,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:10,120 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2020-08-22 16:19:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 16:19:10,121 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 78 [2020-08-22 16:19:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:10,122 INFO L225 Difference]: With dead ends: 84 [2020-08-22 16:19:10,122 INFO L226 Difference]: Without dead ends: 80 [2020-08-22 16:19:10,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=138, Invalid=2118, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 16:19:10,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-08-22 16:19:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 54. [2020-08-22 16:19:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 16:19:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-08-22 16:19:10,130 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 78 [2020-08-22 16:19:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:10,131 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-08-22 16:19:10,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 16:19:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-08-22 16:19:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 16:19:10,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:10,133 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:10,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-08-22 16:19:10,347 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash 462698472, now seen corresponding path program 5 times [2020-08-22 16:19:10,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:10,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54773654] [2020-08-22 16:19:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:11,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-08-22 16:19:11,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54773654] [2020-08-22 16:19:11,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135499627] [2020-08-22 16:19:11,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_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 [2020-08-22 16:19:11,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-08-22 16:19:11,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:11,368 WARN L261 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 96 conjunts are in the unsatisfiable core [2020-08-22 16:19:11,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:11,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:11,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-08-22 16:19:11,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:11,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 31 [2020-08-22 16:19:11,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28511632] [2020-08-22 16:19:11,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 16:19:11,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:11,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 16:19:11,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2020-08-22 16:19:11,777 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 31 states. [2020-08-22 16:19:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:12,993 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-08-22 16:19:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 16:19:13,001 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 85 [2020-08-22 16:19:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:13,003 INFO L225 Difference]: With dead ends: 90 [2020-08-22 16:19:13,003 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 16:19:13,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=156, Invalid=2600, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 16:19:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 16:19:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 57. [2020-08-22 16:19:13,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 16:19:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-08-22 16:19:13,017 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 85 [2020-08-22 16:19:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:13,018 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-08-22 16:19:13,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 16:19:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-08-22 16:19:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 16:19:13,022 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:13,022 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:13,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:13,224 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1580751489, now seen corresponding path program 5 times [2020-08-22 16:19:13,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:13,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875482426] [2020-08-22 16:19:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-08-22 16:19:14,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875482426] [2020-08-22 16:19:14,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520903977] [2020-08-22 16:19:14,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:14,211 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-08-22 16:19:14,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:14,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 80 conjunts are in the unsatisfiable core [2020-08-22 16:19:14,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:15,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:15,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-08-22 16:19:15,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:15,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 54 [2020-08-22 16:19:15,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995159556] [2020-08-22 16:19:15,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-08-22 16:19:15,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:15,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-08-22 16:19:15,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2732, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 16:19:15,651 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 54 states. [2020-08-22 16:19:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:17,834 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-08-22 16:19:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 16:19:17,835 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 92 [2020-08-22 16:19:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:17,837 INFO L225 Difference]: With dead ends: 96 [2020-08-22 16:19:17,837 INFO L226 Difference]: Without dead ends: 92 [2020-08-22 16:19:17,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=250, Invalid=5756, Unknown=0, NotChecked=0, Total=6006 [2020-08-22 16:19:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-22 16:19:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60. [2020-08-22 16:19:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 16:19:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-08-22 16:19:17,846 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 92 [2020-08-22 16:19:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:17,847 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-08-22 16:19:17,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-08-22 16:19:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-08-22 16:19:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 16:19:17,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:17,849 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:18,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-08-22 16:19:18,055 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:18,055 INFO L82 PathProgramCache]: Analyzing trace with hash 165729164, now seen corresponding path program 6 times [2020-08-22 16:19:18,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:18,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081355097] [2020-08-22 16:19:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-08-22 16:19:19,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081355097] [2020-08-22 16:19:19,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466185728] [2020-08-22 16:19:19,126 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:19,187 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-08-22 16:19:19,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:19,191 WARN L261 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 112 conjunts are in the unsatisfiable core [2020-08-22 16:19:19,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:19,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:19,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-08-22 16:19:19,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:19,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 35 [2020-08-22 16:19:19,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744333550] [2020-08-22 16:19:19,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-22 16:19:19,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:19,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-22 16:19:19,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1116, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 16:19:19,551 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 35 states. [2020-08-22 16:19:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:21,304 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-08-22 16:19:21,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 16:19:21,308 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 99 [2020-08-22 16:19:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:21,309 INFO L225 Difference]: With dead ends: 102 [2020-08-22 16:19:21,309 INFO L226 Difference]: Without dead ends: 98 [2020-08-22 16:19:21,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=180, Invalid=3480, Unknown=0, NotChecked=0, Total=3660 [2020-08-22 16:19:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-22 16:19:21,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 63. [2020-08-22 16:19:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-22 16:19:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-08-22 16:19:21,321 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 99 [2020-08-22 16:19:21,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:21,322 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-08-22 16:19:21,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-22 16:19:21,322 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-08-22 16:19:21,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-22 16:19:21,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:21,323 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:21,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-08-22 16:19:21,537 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:21,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash -684135393, now seen corresponding path program 6 times [2020-08-22 16:19:21,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:21,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180114943] [2020-08-22 16:19:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:21,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:21,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:21,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:22,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:22,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-22 16:19:22,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180114943] [2020-08-22 16:19:22,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408045572] [2020-08-22 16:19:22,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:22,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-08-22 16:19:22,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:22,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 92 conjunts are in the unsatisfiable core [2020-08-22 16:19:22,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:24,306 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:24,309 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-22 16:19:24,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:24,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 62 [2020-08-22 16:19:24,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530107221] [2020-08-22 16:19:24,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-08-22 16:19:24,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:24,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-08-22 16:19:24,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3632, Unknown=0, NotChecked=0, Total=3782 [2020-08-22 16:19:24,647 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 62 states. [2020-08-22 16:19:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:27,527 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2020-08-22 16:19:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 16:19:27,527 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 106 [2020-08-22 16:19:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:27,529 INFO L225 Difference]: With dead ends: 108 [2020-08-22 16:19:27,529 INFO L226 Difference]: Without dead ends: 104 [2020-08-22 16:19:27,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=290, Invalid=7720, Unknown=0, NotChecked=0, Total=8010 [2020-08-22 16:19:27,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-22 16:19:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2020-08-22 16:19:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 16:19:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-08-22 16:19:27,543 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 106 [2020-08-22 16:19:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:27,545 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-08-22 16:19:27,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-08-22 16:19:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-08-22 16:19:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-22 16:19:27,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:27,548 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:27,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-08-22 16:19:27,763 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:27,763 INFO L82 PathProgramCache]: Analyzing trace with hash -876959568, now seen corresponding path program 7 times [2020-08-22 16:19:27,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:27,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667731573] [2020-08-22 16:19:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:27,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:27,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:28,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-08-22 16:19:29,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667731573] [2020-08-22 16:19:29,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452310836] [2020-08-22 16:19:29,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:29,369 WARN L261 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 128 conjunts are in the unsatisfiable core [2020-08-22 16:19:29,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:29,531 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:29,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-08-22 16:19:29,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:29,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 39 [2020-08-22 16:19:29,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20301672] [2020-08-22 16:19:29,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 16:19:29,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:29,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 16:19:29,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1400, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 16:19:29,747 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 39 states. [2020-08-22 16:19:31,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:31,856 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-08-22 16:19:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 16:19:31,856 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 113 [2020-08-22 16:19:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:31,857 INFO L225 Difference]: With dead ends: 114 [2020-08-22 16:19:31,858 INFO L226 Difference]: Without dead ends: 110 [2020-08-22 16:19:31,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=204, Invalid=4488, Unknown=0, NotChecked=0, Total=4692 [2020-08-22 16:19:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-22 16:19:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 69. [2020-08-22 16:19:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 16:19:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-08-22 16:19:31,866 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 113 [2020-08-22 16:19:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:31,866 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-08-22 16:19:31,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 16:19:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-08-22 16:19:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 16:19:31,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:31,868 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:32,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-08-22 16:19:32,081 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:32,082 INFO L82 PathProgramCache]: Analyzing trace with hash -307419585, now seen corresponding path program 7 times [2020-08-22 16:19:32,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:32,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866235734] [2020-08-22 16:19:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:32,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:33,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:33,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:33,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-08-22 16:19:33,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866235734] [2020-08-22 16:19:33,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414139869] [2020-08-22 16:19:33,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:33,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 104 conjunts are in the unsatisfiable core [2020-08-22 16:19:33,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:35,906 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:35,908 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-08-22 16:19:36,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:36,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38] total 70 [2020-08-22 16:19:36,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494730896] [2020-08-22 16:19:36,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-08-22 16:19:36,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:36,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-08-22 16:19:36,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=4660, Unknown=0, NotChecked=0, Total=4830 [2020-08-22 16:19:36,198 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 70 states. [2020-08-22 16:19:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:39,822 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2020-08-22 16:19:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 16:19:39,822 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 120 [2020-08-22 16:19:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:39,824 INFO L225 Difference]: With dead ends: 120 [2020-08-22 16:19:39,824 INFO L226 Difference]: Without dead ends: 116 [2020-08-22 16:19:39,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=330, Invalid=9972, Unknown=0, NotChecked=0, Total=10302 [2020-08-22 16:19:39,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-22 16:19:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 72. [2020-08-22 16:19:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-22 16:19:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-08-22 16:19:39,835 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 120 [2020-08-22 16:19:39,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:39,837 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-08-22 16:19:39,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-08-22 16:19:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-08-22 16:19:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-22 16:19:39,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:39,838 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:40,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:40,041 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:40,042 INFO L82 PathProgramCache]: Analyzing trace with hash -873547948, now seen corresponding path program 8 times [2020-08-22 16:19:40,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:40,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328901344] [2020-08-22 16:19:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:41,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:41,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:41,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-08-22 16:19:42,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328901344] [2020-08-22 16:19:42,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853247523] [2020-08-22 16:19:42,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:42,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:19:42,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:42,215 WARN L261 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 144 conjunts are in the unsatisfiable core [2020-08-22 16:19:42,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:42,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:42,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-08-22 16:19:42,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:42,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 43 [2020-08-22 16:19:42,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349179518] [2020-08-22 16:19:42,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-08-22 16:19:42,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:42,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-08-22 16:19:42,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1716, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 16:19:42,635 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 43 states. [2020-08-22 16:19:45,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:45,384 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2020-08-22 16:19:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-22 16:19:45,385 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 127 [2020-08-22 16:19:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:45,386 INFO L225 Difference]: With dead ends: 126 [2020-08-22 16:19:45,386 INFO L226 Difference]: Without dead ends: 122 [2020-08-22 16:19:45,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=228, Invalid=5624, Unknown=0, NotChecked=0, Total=5852 [2020-08-22 16:19:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-22 16:19:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 75. [2020-08-22 16:19:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 16:19:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-08-22 16:19:45,393 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 127 [2020-08-22 16:19:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:45,393 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-08-22 16:19:45,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-08-22 16:19:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-08-22 16:19:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 16:19:45,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:45,395 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:45,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:45,608 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:45,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:45,609 INFO L82 PathProgramCache]: Analyzing trace with hash 178099167, now seen corresponding path program 8 times [2020-08-22 16:19:45,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:45,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494529158] [2020-08-22 16:19:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:45,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:45,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-08-22 16:19:47,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494529158] [2020-08-22 16:19:47,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738100556] [2020-08-22 16:19:47,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:47,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:19:47,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:47,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 116 conjunts are in the unsatisfiable core [2020-08-22 16:19:47,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:50,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:50,500 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-08-22 16:19:50,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:50,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 42] total 78 [2020-08-22 16:19:50,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469315484] [2020-08-22 16:19:50,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-08-22 16:19:50,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:50,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-08-22 16:19:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=5816, Unknown=0, NotChecked=0, Total=6006 [2020-08-22 16:19:50,825 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 78 states. [2020-08-22 16:19:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:55,285 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-08-22 16:19:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 16:19:55,285 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 134 [2020-08-22 16:19:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:55,286 INFO L225 Difference]: With dead ends: 132 [2020-08-22 16:19:55,286 INFO L226 Difference]: Without dead ends: 128 [2020-08-22 16:19:55,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=370, Invalid=12512, Unknown=0, NotChecked=0, Total=12882 [2020-08-22 16:19:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-08-22 16:19:55,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2020-08-22 16:19:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 16:19:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-08-22 16:19:55,293 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 134 [2020-08-22 16:19:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:55,293 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-08-22 16:19:55,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-08-22 16:19:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-08-22 16:19:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-22 16:19:55,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:55,295 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:55,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:55,498 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:55,499 INFO L82 PathProgramCache]: Analyzing trace with hash 273809272, now seen corresponding path program 9 times [2020-08-22 16:19:55,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:55,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314949136] [2020-08-22 16:19:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:55,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:56,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:57,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:57,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:57,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:19:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-22 16:19:57,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314949136] [2020-08-22 16:19:57,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485882640] [2020-08-22 16:19:57,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:57,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-08-22 16:19:57,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:57,746 WARN L261 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 160 conjunts are in the unsatisfiable core [2020-08-22 16:19:57,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:57,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:57,964 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:19:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-22 16:19:58,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:58,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 47 [2020-08-22 16:19:58,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064873859] [2020-08-22 16:19:58,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-08-22 16:19:58,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:58,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-08-22 16:19:58,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=2064, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 16:19:58,243 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 47 states. [2020-08-22 16:20:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:20:01,403 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2020-08-22 16:20:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 16:20:01,406 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 141 [2020-08-22 16:20:01,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:20:01,408 INFO L225 Difference]: With dead ends: 138 [2020-08-22 16:20:01,408 INFO L226 Difference]: Without dead ends: 134 [2020-08-22 16:20:01,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=252, Invalid=6888, Unknown=0, NotChecked=0, Total=7140 [2020-08-22 16:20:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-22 16:20:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 81. [2020-08-22 16:20:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-22 16:20:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-08-22 16:20:01,414 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 141 [2020-08-22 16:20:01,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:20:01,414 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-08-22 16:20:01,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-08-22 16:20:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-08-22 16:20:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 16:20:01,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:20:01,416 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:20:01,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-08-22 16:20:01,622 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:20:01,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:20:01,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1983154945, now seen corresponding path program 9 times [2020-08-22 16:20:01,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:20:01,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021120468] [2020-08-22 16:20:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:20:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:01,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:20:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:20:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:01,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:03,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:03,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-08-22 16:20:03,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021120468] [2020-08-22 16:20:03,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455469543] [2020-08-22 16:20:03,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:20:03,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-08-22 16:20:03,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:20:03,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 128 conjunts are in the unsatisfiable core [2020-08-22 16:20:03,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:20:07,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:07,322 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-08-22 16:20:07,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:20:07,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 86 [2020-08-22 16:20:07,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814397961] [2020-08-22 16:20:07,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-08-22 16:20:07,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:20:07,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-08-22 16:20:07,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=7100, Unknown=0, NotChecked=0, Total=7310 [2020-08-22 16:20:07,693 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 86 states. [2020-08-22 16:20:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:20:13,352 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2020-08-22 16:20:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-22 16:20:13,352 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 148 [2020-08-22 16:20:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:20:13,354 INFO L225 Difference]: With dead ends: 144 [2020-08-22 16:20:13,354 INFO L226 Difference]: Without dead ends: 140 [2020-08-22 16:20:13,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=410, Invalid=15340, Unknown=0, NotChecked=0, Total=15750 [2020-08-22 16:20:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-22 16:20:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2020-08-22 16:20:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-22 16:20:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-08-22 16:20:13,361 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 148 [2020-08-22 16:20:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:20:13,362 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-08-22 16:20:13,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-08-22 16:20:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-08-22 16:20:13,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 16:20:13,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:20:13,363 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:20:13,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-08-22 16:20:13,576 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:20:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:20:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -708738788, now seen corresponding path program 10 times [2020-08-22 16:20:13,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:20:13,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677092051] [2020-08-22 16:20:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:20:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:20:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:20:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:13,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:15,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:15,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-08-22 16:20:16,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677092051] [2020-08-22 16:20:16,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785621690] [2020-08-22 16:20:16,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:20:16,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:20:16,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:20:16,817 WARN L261 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 176 conjunts are in the unsatisfiable core [2020-08-22 16:20:16,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:20:17,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:17,074 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-08-22 16:20:17,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:20:17,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 51 [2020-08-22 16:20:17,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126672115] [2020-08-22 16:20:17,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-08-22 16:20:17,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:20:17,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-08-22 16:20:17,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=2444, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 16:20:17,345 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 51 states. [2020-08-22 16:20:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:20:20,999 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2020-08-22 16:20:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-22 16:20:21,003 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 155 [2020-08-22 16:20:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:20:21,005 INFO L225 Difference]: With dead ends: 150 [2020-08-22 16:20:21,005 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 16:20:21,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=276, Invalid=8280, Unknown=0, NotChecked=0, Total=8556 [2020-08-22 16:20:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 16:20:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 87. [2020-08-22 16:20:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-22 16:20:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-08-22 16:20:21,011 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 155 [2020-08-22 16:20:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:20:21,012 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-08-22 16:20:21,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-08-22 16:20:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-08-22 16:20:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 16:20:21,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:20:21,013 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:20:21,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-08-22 16:20:21,215 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:20:21,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:20:21,216 INFO L82 PathProgramCache]: Analyzing trace with hash -448788065, now seen corresponding path program 10 times [2020-08-22 16:20:21,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:20:21,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008013074] [2020-08-22 16:20:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:20:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:20:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:20:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:21,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:22,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:22,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:23,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:23,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-08-22 16:20:24,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008013074] [2020-08-22 16:20:24,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874093834] [2020-08-22 16:20:24,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:20:24,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:20:24,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:20:24,243 WARN L261 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 184 conjunts are in the unsatisfiable core [2020-08-22 16:20:24,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:20:24,520 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:24,522 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-08-22 16:20:24,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:20:24,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 52 [2020-08-22 16:20:24,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881742320] [2020-08-22 16:20:24,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-08-22 16:20:24,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:20:24,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-08-22 16:20:24,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2547, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 16:20:24,806 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 52 states. [2020-08-22 16:20:28,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:20:28,964 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2020-08-22 16:20:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-22 16:20:28,964 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 162 [2020-08-22 16:20:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:20:28,965 INFO L225 Difference]: With dead ends: 156 [2020-08-22 16:20:28,965 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 16:20:28,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=282, Invalid=8838, Unknown=0, NotChecked=0, Total=9120 [2020-08-22 16:20:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 16:20:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 90. [2020-08-22 16:20:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-22 16:20:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-08-22 16:20:28,972 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 162 [2020-08-22 16:20:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:20:28,972 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-08-22 16:20:28,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-08-22 16:20:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-08-22 16:20:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-22 16:20:28,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:20:28,973 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:20:29,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-08-22 16:20:29,178 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:20:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:20:29,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1407042496, now seen corresponding path program 11 times [2020-08-22 16:20:29,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:20:29,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111614520] [2020-08-22 16:20:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:20:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:20:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:29,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:20:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:29,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:29,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:30,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:31,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:31,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:31,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-08-22 16:20:32,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111614520] [2020-08-22 16:20:32,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955224923] [2020-08-22 16:20:32,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:20:32,451 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-08-22 16:20:32,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:20:32,455 WARN L261 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 192 conjunts are in the unsatisfiable core [2020-08-22 16:20:32,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:20:32,735 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:32,741 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-08-22 16:20:33,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:20:33,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 55 [2020-08-22 16:20:33,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947647957] [2020-08-22 16:20:33,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 16:20:33,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:20:33,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 16:20:33,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=2856, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 16:20:33,043 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 55 states. [2020-08-22 16:20:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:20:37,608 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-08-22 16:20:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-22 16:20:37,614 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 169 [2020-08-22 16:20:37,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:20:37,615 INFO L225 Difference]: With dead ends: 162 [2020-08-22 16:20:37,615 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 16:20:37,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=300, Invalid=9800, Unknown=0, NotChecked=0, Total=10100 [2020-08-22 16:20:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 16:20:37,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 93. [2020-08-22 16:20:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-22 16:20:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-08-22 16:20:37,622 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 169 [2020-08-22 16:20:37,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:20:37,622 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-08-22 16:20:37,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 16:20:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-08-22 16:20:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 16:20:37,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:20:37,624 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:20:37,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-08-22 16:20:37,839 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:20:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:20:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash 491557311, now seen corresponding path program 11 times [2020-08-22 16:20:37,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:20:37,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044878508] [2020-08-22 16:20:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:20:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:37,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:20:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:37,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:20:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:38,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:39,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:40,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-08-22 16:20:41,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044878508] [2020-08-22 16:20:41,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928481969] [2020-08-22 16:20:41,134 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:20:41,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-08-22 16:20:41,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:20:41,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 152 conjunts are in the unsatisfiable core [2020-08-22 16:20:41,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:20:46,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:46,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-08-22 16:20:46,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:20:46,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 102 [2020-08-22 16:20:46,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351931323] [2020-08-22 16:20:46,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-08-22 16:20:46,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:20:46,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-08-22 16:20:46,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=10052, Unknown=0, NotChecked=0, Total=10302 [2020-08-22 16:20:46,800 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 102 states. [2020-08-22 16:20:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:20:54,884 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2020-08-22 16:20:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 16:20:54,884 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 176 [2020-08-22 16:20:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:20:54,886 INFO L225 Difference]: With dead ends: 168 [2020-08-22 16:20:54,886 INFO L226 Difference]: Without dead ends: 164 [2020-08-22 16:20:54,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=490, Invalid=21860, Unknown=0, NotChecked=0, Total=22350 [2020-08-22 16:20:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-22 16:20:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 96. [2020-08-22 16:20:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 16:20:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2020-08-22 16:20:54,893 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 176 [2020-08-22 16:20:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:20:54,893 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2020-08-22 16:20:54,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-08-22 16:20:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2020-08-22 16:20:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-22 16:20:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:20:54,895 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:20:55,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:20:55,110 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:20:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:20:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash 308359396, now seen corresponding path program 12 times [2020-08-22 16:20:55,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:20:55,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073690458] [2020-08-22 16:20:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:20:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:20:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:20:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:56,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:56,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:56,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:57,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:57,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:57,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:58,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:58,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:20:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:20:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-08-22 16:20:58,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073690458] [2020-08-22 16:20:58,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464490331] [2020-08-22 16:20:58,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:20:58,907 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-08-22 16:20:58,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:20:58,912 WARN L261 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 208 conjunts are in the unsatisfiable core [2020-08-22 16:20:58,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:20:59,219 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:59,226 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:20:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-08-22 16:20:59,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:20:59,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 59 [2020-08-22 16:20:59,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001453149] [2020-08-22 16:20:59,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-08-22 16:20:59,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:20:59,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-08-22 16:20:59,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=3300, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 16:20:59,619 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 59 states. [2020-08-22 16:21:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:21:04,953 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2020-08-22 16:21:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-08-22 16:21:04,954 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 183 [2020-08-22 16:21:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:21:04,957 INFO L225 Difference]: With dead ends: 174 [2020-08-22 16:21:04,957 INFO L226 Difference]: Without dead ends: 170 [2020-08-22 16:21:04,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1483 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=324, Invalid=11448, Unknown=0, NotChecked=0, Total=11772 [2020-08-22 16:21:04,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-22 16:21:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 99. [2020-08-22 16:21:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-22 16:21:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-08-22 16:21:04,964 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 183 [2020-08-22 16:21:04,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:21:04,965 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-08-22 16:21:04,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-08-22 16:21:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-08-22 16:21:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-08-22 16:21:04,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:21:04,967 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:21:05,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-08-22 16:21:05,168 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:21:05,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:21:05,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1601548961, now seen corresponding path program 12 times [2020-08-22 16:21:05,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:21:05,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115134006] [2020-08-22 16:21:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:21:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:21:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:21:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:06,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:06,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:07,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:07,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:07,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:08,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:08,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:08,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-08-22 16:21:09,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115134006] [2020-08-22 16:21:09,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164847517] [2020-08-22 16:21:09,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:21:09,181 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-08-22 16:21:09,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:21:09,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 164 conjunts are in the unsatisfiable core [2020-08-22 16:21:09,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:21:15,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:21:15,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:21:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-08-22 16:21:15,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:21:15,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 110 [2020-08-22 16:21:15,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271557050] [2020-08-22 16:21:15,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2020-08-22 16:21:15,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:21:15,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2020-08-22 16:21:15,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=11720, Unknown=0, NotChecked=0, Total=11990 [2020-08-22 16:21:15,863 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 110 states. [2020-08-22 16:21:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:21:25,417 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2020-08-22 16:21:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-08-22 16:21:25,417 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 190 [2020-08-22 16:21:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:21:25,418 INFO L225 Difference]: With dead ends: 180 [2020-08-22 16:21:25,419 INFO L226 Difference]: Without dead ends: 176 [2020-08-22 16:21:25,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=530, Invalid=25552, Unknown=0, NotChecked=0, Total=26082 [2020-08-22 16:21:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-08-22 16:21:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 102. [2020-08-22 16:21:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-22 16:21:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2020-08-22 16:21:25,426 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 190 [2020-08-22 16:21:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:21:25,426 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2020-08-22 16:21:25,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 110 states. [2020-08-22 16:21:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2020-08-22 16:21:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-22 16:21:25,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:21:25,427 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:21:25,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-08-22 16:21:25,628 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:21:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:21:25,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1837932792, now seen corresponding path program 13 times [2020-08-22 16:21:25,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:21:25,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439068685] [2020-08-22 16:21:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:21:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:21:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:21:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:25,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:26,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:27,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:27,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:27,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:28,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:28,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-08-22 16:21:30,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439068685] [2020-08-22 16:21:30,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142952201] [2020-08-22 16:21:30,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:21:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:30,185 WARN L261 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 224 conjunts are in the unsatisfiable core [2020-08-22 16:21:30,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:21:30,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:21:30,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:21:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-08-22 16:21:31,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:21:31,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 63 [2020-08-22 16:21:31,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962001582] [2020-08-22 16:21:31,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-08-22 16:21:31,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:21:31,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-08-22 16:21:31,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=3776, Unknown=0, NotChecked=0, Total=3906 [2020-08-22 16:21:31,276 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand 63 states. [2020-08-22 16:21:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:21:37,878 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2020-08-22 16:21:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-08-22 16:21:37,879 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 197 [2020-08-22 16:21:37,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:21:37,881 INFO L225 Difference]: With dead ends: 186 [2020-08-22 16:21:37,881 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 16:21:37,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=348, Invalid=13224, Unknown=0, NotChecked=0, Total=13572 [2020-08-22 16:21:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 16:21:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 105. [2020-08-22 16:21:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 16:21:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-08-22 16:21:37,889 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 197 [2020-08-22 16:21:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:21:37,889 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-08-22 16:21:37,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-08-22 16:21:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-08-22 16:21:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 16:21:37,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:21:37,891 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:21:38,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:21:38,105 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:21:38,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:21:38,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1277526913, now seen corresponding path program 13 times [2020-08-22 16:21:38,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:21:38,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007568421] [2020-08-22 16:21:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:21:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:21:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:21:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:39,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:39,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:39,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:39,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:39,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:40,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:41,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:21:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-08-22 16:21:43,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007568421] [2020-08-22 16:21:43,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086209583] [2020-08-22 16:21:43,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:21:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:21:43,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 176 conjunts are in the unsatisfiable core [2020-08-22 16:21:43,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:21:51,274 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:21:51,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:21:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-08-22 16:21:51,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:21:51,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 118 [2020-08-22 16:21:51,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009736421] [2020-08-22 16:21:51,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2020-08-22 16:21:51,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:21:51,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2020-08-22 16:21:51,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=13516, Unknown=0, NotChecked=0, Total=13806 [2020-08-22 16:21:51,737 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 118 states. [2020-08-22 16:22:03,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:22:03,313 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-08-22 16:22:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-08-22 16:22:03,313 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 204 [2020-08-22 16:22:03,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:22:03,314 INFO L225 Difference]: With dead ends: 192 [2020-08-22 16:22:03,315 INFO L226 Difference]: Without dead ends: 188 [2020-08-22 16:22:03,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3305 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=570, Invalid=29532, Unknown=0, NotChecked=0, Total=30102 [2020-08-22 16:22:03,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-22 16:22:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2020-08-22 16:22:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-22 16:22:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-08-22 16:22:03,323 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 204 [2020-08-22 16:22:03,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:22:03,324 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-08-22 16:22:03,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 118 states. [2020-08-22 16:22:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-08-22 16:22:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-08-22 16:22:03,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:22:03,325 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:22:03,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:22:03,538 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:22:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:22:03,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1565902508, now seen corresponding path program 14 times [2020-08-22 16:22:03,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:22:03,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732674477] [2020-08-22 16:22:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:22:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:22:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:22:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:03,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:03,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:04,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:05,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:05,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:05,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:05,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:06,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:06,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:06,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:07,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:07,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:08,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-08-22 16:22:08,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732674477] [2020-08-22 16:22:08,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478046541] [2020-08-22 16:22:08,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:22:08,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:22:08,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:22:08,907 WARN L261 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 240 conjunts are in the unsatisfiable core [2020-08-22 16:22:08,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:22:09,302 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:22:09,303 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:22:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-08-22 16:22:09,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:22:09,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 67 [2020-08-22 16:22:09,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130487541] [2020-08-22 16:22:09,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-08-22 16:22:09,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:22:09,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-08-22 16:22:09,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=4284, Unknown=0, NotChecked=0, Total=4422 [2020-08-22 16:22:09,722 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 67 states. [2020-08-22 16:22:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:22:17,992 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2020-08-22 16:22:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-08-22 16:22:17,993 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 211 [2020-08-22 16:22:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:22:17,994 INFO L225 Difference]: With dead ends: 198 [2020-08-22 16:22:17,995 INFO L226 Difference]: Without dead ends: 194 [2020-08-22 16:22:17,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1951 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=372, Invalid=15128, Unknown=0, NotChecked=0, Total=15500 [2020-08-22 16:22:17,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-22 16:22:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 111. [2020-08-22 16:22:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 16:22:18,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2020-08-22 16:22:18,002 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 211 [2020-08-22 16:22:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:22:18,003 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2020-08-22 16:22:18,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-08-22 16:22:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2020-08-22 16:22:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 16:22:18,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:22:18,004 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:22:18,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-08-22 16:22:18,216 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:22:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:22:18,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1516658463, now seen corresponding path program 14 times [2020-08-22 16:22:18,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:22:18,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115278558] [2020-08-22 16:22:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:22:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:22:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:22:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:19,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:19,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:19,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:19,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:20,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:20,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:22,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:22,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:22,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:22,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:23,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2020-08-22 16:22:23,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115278558] [2020-08-22 16:22:23,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050719748] [2020-08-22 16:22:23,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:22:23,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:22:23,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:22:23,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 188 conjunts are in the unsatisfiable core [2020-08-22 16:22:23,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:22:34,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:22:34,210 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:22:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2020-08-22 16:22:34,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:22:34,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 66] total 126 [2020-08-22 16:22:34,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757390115] [2020-08-22 16:22:34,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2020-08-22 16:22:34,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:22:34,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2020-08-22 16:22:34,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=15440, Unknown=0, NotChecked=0, Total=15750 [2020-08-22 16:22:34,890 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 126 states. [2020-08-22 16:22:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:22:50,349 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2020-08-22 16:22:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-08-22 16:22:50,349 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 218 [2020-08-22 16:22:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:22:50,351 INFO L225 Difference]: With dead ends: 204 [2020-08-22 16:22:50,351 INFO L226 Difference]: Without dead ends: 200 [2020-08-22 16:22:50,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3660 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=610, Invalid=33800, Unknown=0, NotChecked=0, Total=34410 [2020-08-22 16:22:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-22 16:22:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 114. [2020-08-22 16:22:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 16:22:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-08-22 16:22:50,359 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 218 [2020-08-22 16:22:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:22:50,360 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-08-22 16:22:50,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 126 states. [2020-08-22 16:22:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-08-22 16:22:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-08-22 16:22:50,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:22:50,361 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:22:50,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:22:50,575 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:22:50,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:22:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1728931792, now seen corresponding path program 15 times [2020-08-22 16:22:50,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:22:50,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282417405] [2020-08-22 16:22:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:22:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:50,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:22:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:50,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:22:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:50,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:51,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:51,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:51,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:52,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:52,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:53,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:53,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:53,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:54,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:55,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:55,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:56,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:22:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:22:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-08-22 16:22:57,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282417405] [2020-08-22 16:22:57,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221612696] [2020-08-22 16:22:57,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:22:57,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-08-22 16:22:57,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:22:57,480 WARN L261 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 256 conjunts are in the unsatisfiable core [2020-08-22 16:22:57,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:22:57,954 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:22:57,960 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:22:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-08-22 16:22:58,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:22:58,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 71 [2020-08-22 16:22:58,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617646151] [2020-08-22 16:22:58,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-08-22 16:22:58,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:22:58,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-08-22 16:22:58,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=4824, Unknown=0, NotChecked=0, Total=4970 [2020-08-22 16:22:58,435 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 71 states. [2020-08-22 16:23:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:23:08,596 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2020-08-22 16:23:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-08-22 16:23:08,597 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 225 [2020-08-22 16:23:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:23:08,599 INFO L225 Difference]: With dead ends: 210 [2020-08-22 16:23:08,599 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 16:23:08,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=396, Invalid=17160, Unknown=0, NotChecked=0, Total=17556 [2020-08-22 16:23:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 16:23:08,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 117. [2020-08-22 16:23:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-22 16:23:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2020-08-22 16:23:08,606 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 225 [2020-08-22 16:23:08,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:23:08,607 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2020-08-22 16:23:08,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-08-22 16:23:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2020-08-22 16:23:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-08-22 16:23:08,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:23:08,609 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:23:08,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-08-22 16:23:08,824 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:23:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:23:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1113639617, now seen corresponding path program 15 times [2020-08-22 16:23:08,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:23:08,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715732496] [2020-08-22 16:23:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:23:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:23:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:23:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:09,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:09,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:09,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:09,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:09,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:10,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:11,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:12,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:12,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:13,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:13,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:14,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:14,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:15,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-08-22 16:23:16,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715732496] [2020-08-22 16:23:16,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265253372] [2020-08-22 16:23:16,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:23:16,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-08-22 16:23:16,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:23:16,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 200 conjunts are in the unsatisfiable core [2020-08-22 16:23:16,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:23:29,406 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:23:29,412 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:23:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-08-22 16:23:30,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:23:30,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 134 [2020-08-22 16:23:30,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212798723] [2020-08-22 16:23:30,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2020-08-22 16:23:30,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:23:30,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2020-08-22 16:23:30,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=17492, Unknown=0, NotChecked=0, Total=17822 [2020-08-22 16:23:30,136 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 134 states. [2020-08-22 16:23:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:23:50,625 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2020-08-22 16:23:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-08-22 16:23:50,625 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 232 [2020-08-22 16:23:50,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:23:50,626 INFO L225 Difference]: With dead ends: 216 [2020-08-22 16:23:50,626 INFO L226 Difference]: Without dead ends: 212 [2020-08-22 16:23:50,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=650, Invalid=38356, Unknown=0, NotChecked=0, Total=39006 [2020-08-22 16:23:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-22 16:23:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 120. [2020-08-22 16:23:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 16:23:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2020-08-22 16:23:50,634 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 232 [2020-08-22 16:23:50,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:23:50,634 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2020-08-22 16:23:50,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 134 states. [2020-08-22 16:23:50,634 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2020-08-22 16:23:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-08-22 16:23:50,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:23:50,636 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:23:50,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:23:50,842 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:23:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:23:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash 44515956, now seen corresponding path program 16 times [2020-08-22 16:23:50,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:23:50,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571278330] [2020-08-22 16:23:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:23:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:23:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:23:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:51,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:52,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:53,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:53,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:53,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:54,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:55,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:55,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:56,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:56,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:57,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:57,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:58,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:58,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:23:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:23:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-08-22 16:23:59,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571278330] [2020-08-22 16:23:59,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721590125] [2020-08-22 16:23:59,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:23:59,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:23:59,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:23:59,739 WARN L261 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 272 conjunts are in the unsatisfiable core [2020-08-22 16:23:59,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:24:00,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:24:00,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:24:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-08-22 16:24:00,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:24:00,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 75 [2020-08-22 16:24:00,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414802291] [2020-08-22 16:24:00,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-08-22 16:24:00,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:24:00,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-08-22 16:24:00,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=5396, Unknown=0, NotChecked=0, Total=5550 [2020-08-22 16:24:00,944 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 75 states. [2020-08-22 16:24:14,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:24:14,909 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2020-08-22 16:24:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-08-22 16:24:14,910 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 239 [2020-08-22 16:24:14,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:24:14,912 INFO L225 Difference]: With dead ends: 222 [2020-08-22 16:24:14,912 INFO L226 Difference]: Without dead ends: 218 [2020-08-22 16:24:14,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=420, Invalid=19320, Unknown=0, NotChecked=0, Total=19740 [2020-08-22 16:24:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-08-22 16:24:14,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 123. [2020-08-22 16:24:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 16:24:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-08-22 16:24:14,920 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 239 [2020-08-22 16:24:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:24:14,921 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-08-22 16:24:14,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-08-22 16:24:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-08-22 16:24:14,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-08-22 16:24:14,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:24:14,923 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:24:15,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-08-22 16:24:15,138 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:24:15,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:24:15,138 INFO L82 PathProgramCache]: Analyzing trace with hash 356400863, now seen corresponding path program 16 times [2020-08-22 16:24:15,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:24:15,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896443123] [2020-08-22 16:24:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:24:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:15,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:24:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:24:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:15,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:15,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:16,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:16,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:17,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:19,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:19,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:20,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:20,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:21,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:21,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:22,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2020-08-22 16:24:24,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896443123] [2020-08-22 16:24:24,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391399866] [2020-08-22 16:24:24,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:24:24,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:24:24,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:24:24,439 WARN L261 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 280 conjunts are in the unsatisfiable core [2020-08-22 16:24:24,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:24:24,980 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:24:24,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:24:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2020-08-22 16:24:25,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:24:25,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 76 [2020-08-22 16:24:25,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870201815] [2020-08-22 16:24:25,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-08-22 16:24:25,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:24:25,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-08-22 16:24:25,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5547, Unknown=0, NotChecked=0, Total=5700 [2020-08-22 16:24:25,543 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 76 states. [2020-08-22 16:24:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:24:40,652 INFO L93 Difference]: Finished difference Result 228 states and 230 transitions. [2020-08-22 16:24:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-08-22 16:24:40,653 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 246 [2020-08-22 16:24:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:24:40,655 INFO L225 Difference]: With dead ends: 228 [2020-08-22 16:24:40,655 INFO L226 Difference]: Without dead ends: 224 [2020-08-22 16:24:40,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=426, Invalid=20166, Unknown=0, NotChecked=0, Total=20592 [2020-08-22 16:24:40,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-22 16:24:40,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 126. [2020-08-22 16:24:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-22 16:24:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2020-08-22 16:24:40,663 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 246 [2020-08-22 16:24:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:24:40,664 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2020-08-22 16:24:40,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-08-22 16:24:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2020-08-22 16:24:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-08-22 16:24:40,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:24:40,666 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:24:40,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-08-22 16:24:40,881 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:24:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:24:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash -29862248, now seen corresponding path program 17 times [2020-08-22 16:24:40,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:24:40,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902649264] [2020-08-22 16:24:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:24:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:41,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:24:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:41,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:24:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:41,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:41,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:42,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:43,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:43,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:44,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:44,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:45,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:45,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:46,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:48,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:49,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:50,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:24:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:24:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2020-08-22 16:24:51,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902649264] [2020-08-22 16:24:51,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692264171] [2020-08-22 16:24:51,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:24:51,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-08-22 16:24:51,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:24:51,744 WARN L261 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 288 conjunts are in the unsatisfiable core [2020-08-22 16:24:51,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:24:52,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:24:52,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:24:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2020-08-22 16:24:53,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:24:53,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 79 [2020-08-22 16:24:53,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991744958] [2020-08-22 16:24:53,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-08-22 16:24:53,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:24:53,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-08-22 16:24:53,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=6000, Unknown=0, NotChecked=0, Total=6162 [2020-08-22 16:24:53,210 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 79 states. [2020-08-22 16:25:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:25:10,412 INFO L93 Difference]: Finished difference Result 234 states and 236 transitions. [2020-08-22 16:25:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-08-22 16:25:10,414 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 253 [2020-08-22 16:25:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:25:10,417 INFO L225 Difference]: With dead ends: 234 [2020-08-22 16:25:10,417 INFO L226 Difference]: Without dead ends: 230 [2020-08-22 16:25:10,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2773 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=444, Invalid=21608, Unknown=0, NotChecked=0, Total=22052 [2020-08-22 16:25:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-08-22 16:25:10,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 129. [2020-08-22 16:25:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 16:25:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2020-08-22 16:25:10,425 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 253 [2020-08-22 16:25:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:25:10,425 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2020-08-22 16:25:10,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-08-22 16:25:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2020-08-22 16:25:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-08-22 16:25:10,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:25:10,427 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:25:10,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-08-22 16:25:10,641 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:25:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:25:10,642 INFO L82 PathProgramCache]: Analyzing trace with hash 256162815, now seen corresponding path program 17 times [2020-08-22 16:25:10,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:25:10,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817178753] [2020-08-22 16:25:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:25:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:25:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:25:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:11,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:11,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:12,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:13,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:13,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:13,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:15,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:15,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:16,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:18,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:19,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:19,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:25:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:25:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-08-22 16:25:21,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817178753] [2020-08-22 16:25:21,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523616240] [2020-08-22 16:25:21,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:25:21,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-08-22 16:25:21,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:25:21,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 224 conjunts are in the unsatisfiable core [2020-08-22 16:25:21,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:25:42,276 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:25:42,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:25:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-08-22 16:25:43,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:25:43,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 150 [2020-08-22 16:25:43,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911693365] [2020-08-22 16:25:43,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2020-08-22 16:25:43,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:25:43,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2020-08-22 16:25:43,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=21980, Unknown=0, NotChecked=0, Total=22350 [2020-08-22 16:25:43,303 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 150 states. [2020-08-22 16:26:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:26:17,290 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2020-08-22 16:26:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-08-22 16:26:17,291 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 260 [2020-08-22 16:26:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:26:17,292 INFO L225 Difference]: With dead ends: 240 [2020-08-22 16:26:17,292 INFO L226 Difference]: Without dead ends: 236 [2020-08-22 16:26:17,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5401 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=730, Invalid=48332, Unknown=0, NotChecked=0, Total=49062 [2020-08-22 16:26:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-22 16:26:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 132. [2020-08-22 16:26:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 16:26:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2020-08-22 16:26:17,301 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 260 [2020-08-22 16:26:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:26:17,301 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2020-08-22 16:26:17,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 150 states. [2020-08-22 16:26:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2020-08-22 16:26:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-08-22 16:26:17,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:26:17,303 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:26:17,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-08-22 16:26:17,511 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:26:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:26:17,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1054712892, now seen corresponding path program 18 times [2020-08-22 16:26:17,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:26:17,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618180587] [2020-08-22 16:26:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:26:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:17,724 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 18 [2020-08-22 16:26:17,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:26:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:26:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:17,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:18,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:18,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:18,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:19,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:19,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:19,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:19,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:20,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:21,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:22,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:22,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:23,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:24,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:25,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:26,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:27,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-08-22 16:26:30,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618180587] [2020-08-22 16:26:30,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647046809] [2020-08-22 16:26:30,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:26:30,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-08-22 16:26:30,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:26:30,895 WARN L261 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 304 conjunts are in the unsatisfiable core [2020-08-22 16:26:30,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:26:31,673 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:26:31,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:26:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-08-22 16:26:32,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:26:32,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 83 [2020-08-22 16:26:32,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696175143] [2020-08-22 16:26:32,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-08-22 16:26:32,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:26:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-08-22 16:26:32,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=6636, Unknown=0, NotChecked=0, Total=6806 [2020-08-22 16:26:32,555 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 83 states. [2020-08-22 16:26:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:26:54,637 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2020-08-22 16:26:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-08-22 16:26:54,641 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 267 [2020-08-22 16:26:54,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:26:54,643 INFO L225 Difference]: With dead ends: 246 [2020-08-22 16:26:54,643 INFO L226 Difference]: Without dead ends: 242 [2020-08-22 16:26:54,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=468, Invalid=24024, Unknown=0, NotChecked=0, Total=24492 [2020-08-22 16:26:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-22 16:26:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 135. [2020-08-22 16:26:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-22 16:26:54,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2020-08-22 16:26:54,650 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 267 [2020-08-22 16:26:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:26:54,651 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2020-08-22 16:26:54,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-08-22 16:26:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2020-08-22 16:26:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-08-22 16:26:54,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:26:54,652 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:26:54,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-08-22 16:26:54,856 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:26:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:26:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1208226657, now seen corresponding path program 18 times [2020-08-22 16:26:54,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:26:54,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119713260] [2020-08-22 16:26:54,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:26:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:55,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:26:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:55,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:26:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:55,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:55,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:55,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:55,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:55,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:56,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:57,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:57,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:58,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:26:59,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:26:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:00,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:00,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:02,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:04,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:05,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:27:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:27:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-08-22 16:27:08,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119713260] [2020-08-22 16:27:08,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490014489] [2020-08-22 16:27:08,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:27:08,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-08-22 16:27:08,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:27:08,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 236 conjunts are in the unsatisfiable core [2020-08-22 16:27:08,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:27:31,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:27:31,576 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:27:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-08-22 16:27:32,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:27:32,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 158 [2020-08-22 16:27:32,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537766049] [2020-08-22 16:27:32,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2020-08-22 16:27:32,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:27:32,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2020-08-22 16:27:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=24416, Unknown=0, NotChecked=0, Total=24806 [2020-08-22 16:27:32,738 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 158 states. [2020-08-22 16:28:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:28:13,103 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2020-08-22 16:28:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-08-22 16:28:13,103 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 274 [2020-08-22 16:28:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:28:13,105 INFO L225 Difference]: With dead ends: 252 [2020-08-22 16:28:13,105 INFO L226 Difference]: Without dead ends: 248 [2020-08-22 16:28:13,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 273 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6005 ImplicationChecksByTransitivity, 57.8s TimeCoverageRelationStatistics Valid=770, Invalid=53752, Unknown=0, NotChecked=0, Total=54522 [2020-08-22 16:28:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-22 16:28:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 138. [2020-08-22 16:28:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 16:28:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-08-22 16:28:13,113 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 274 [2020-08-22 16:28:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:28:13,114 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-08-22 16:28:13,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 158 states. [2020-08-22 16:28:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-08-22 16:28:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-08-22 16:28:13,116 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:28:13,116 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:28:13,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-08-22 16:28:13,330 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:28:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:28:13,331 INFO L82 PathProgramCache]: Analyzing trace with hash -591647904, now seen corresponding path program 19 times [2020-08-22 16:28:13,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:28:13,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727190116] [2020-08-22 16:28:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:28:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:13,578 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 18 [2020-08-22 16:28:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:28:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:28:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:13,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:13,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:14,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:14,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:15,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:15,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:16,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:18,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:18,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:18,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:20,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:21,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:22,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:24,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:25,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:28:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2020-08-22 16:28:29,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727190116] [2020-08-22 16:28:29,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920929719] [2020-08-22 16:28:29,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:28:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:28:29,908 WARN L261 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 320 conjunts are in the unsatisfiable core [2020-08-22 16:28:29,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:28:30,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:28:30,920 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:28:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2020-08-22 16:28:31,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:28:31,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 87 [2020-08-22 16:28:31,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551345846] [2020-08-22 16:28:31,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-08-22 16:28:31,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:28:31,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-08-22 16:28:31,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=7304, Unknown=0, NotChecked=0, Total=7482 [2020-08-22 16:28:31,936 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 87 states. [2020-08-22 16:29:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:29:01,463 INFO L93 Difference]: Finished difference Result 258 states and 260 transitions. [2020-08-22 16:29:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-08-22 16:29:01,466 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 281 [2020-08-22 16:29:01,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:29:01,468 INFO L225 Difference]: With dead ends: 258 [2020-08-22 16:29:01,468 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 16:29:01,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 356 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3401 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=492, Invalid=26568, Unknown=0, NotChecked=0, Total=27060 [2020-08-22 16:29:01,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 16:29:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 141. [2020-08-22 16:29:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-22 16:29:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2020-08-22 16:29:01,477 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 281 [2020-08-22 16:29:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:29:01,477 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2020-08-22 16:29:01,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-08-22 16:29:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2020-08-22 16:29:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-08-22 16:29:01,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:29:01,479 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:29:01,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-08-22 16:29:01,691 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:29:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:29:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -504033089, now seen corresponding path program 19 times [2020-08-22 16:29:01,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:29:01,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49248885] [2020-08-22 16:29:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:29:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:29:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:29:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:02,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:02,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:02,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:03,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:04,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:06,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:06,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:06,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:08,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:09,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:09,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:11,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:15,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:15,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:29:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2020-08-22 16:29:18,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49248885] [2020-08-22 16:29:18,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958180268] [2020-08-22 16:29:18,714 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:29:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:29:18,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 248 conjunts are in the unsatisfiable core [2020-08-22 16:29:18,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:29:51,057 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:29:51,059 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:29:52,436 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 10 [2020-08-22 16:29:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2020-08-22 16:29:52,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:29:52,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 86] total 166 [2020-08-22 16:29:52,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785459212] [2020-08-22 16:29:52,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2020-08-22 16:29:52,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:29:52,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2020-08-22 16:29:52,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=26980, Unknown=0, NotChecked=0, Total=27390 [2020-08-22 16:29:52,519 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 166 states. [2020-08-22 16:30:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:30:48,843 INFO L93 Difference]: Finished difference Result 264 states and 266 transitions. [2020-08-22 16:30:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-08-22 16:30:48,844 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 288 [2020-08-22 16:30:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:30:48,846 INFO L225 Difference]: With dead ends: 264 [2020-08-22 16:30:48,846 INFO L226 Difference]: Without dead ends: 260 [2020-08-22 16:30:48,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 287 SyntacticMatches, 2 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6480 ImplicationChecksByTransitivity, 79.0s TimeCoverageRelationStatistics Valid=810, Invalid=59460, Unknown=0, NotChecked=0, Total=60270 [2020-08-22 16:30:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-22 16:30:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 144. [2020-08-22 16:30:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-22 16:30:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2020-08-22 16:30:48,856 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 288 [2020-08-22 16:30:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:30:48,856 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2020-08-22 16:30:48,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 166 states. [2020-08-22 16:30:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2020-08-22 16:30:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-08-22 16:30:48,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:30:48,858 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:30:49,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:30:49,073 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:30:49,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:30:49,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1090458620, now seen corresponding path program 20 times [2020-08-22 16:30:49,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:30:49,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628587114] [2020-08-22 16:30:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:30:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:49,336 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 18 [2020-08-22 16:30:49,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:30:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:30:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:50,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:50,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:50,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:50,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:51,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:52,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:52,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:52,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:53,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:54,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:55,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:55,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:56,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:58,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:30:59,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:30:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:00,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:03,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:04,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:04,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:05,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2020-08-22 16:31:09,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628587114] [2020-08-22 16:31:09,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612622451] [2020-08-22 16:31:09,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:31:09,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:31:09,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:31:09,772 WARN L261 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 336 conjunts are in the unsatisfiable core [2020-08-22 16:31:09,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:31:11,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:31:11,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:31:12,201 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 19 [2020-08-22 16:31:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2020-08-22 16:31:12,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:31:12,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 91 [2020-08-22 16:31:12,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91498189] [2020-08-22 16:31:12,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-08-22 16:31:12,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:31:12,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-08-22 16:31:12,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=8004, Unknown=0, NotChecked=0, Total=8190 [2020-08-22 16:31:12,301 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand 91 states. [2020-08-22 16:31:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:31:51,432 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2020-08-22 16:31:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-08-22 16:31:51,436 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 295 [2020-08-22 16:31:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:31:51,438 INFO L225 Difference]: With dead ends: 270 [2020-08-22 16:31:51,438 INFO L226 Difference]: Without dead ends: 266 [2020-08-22 16:31:51,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 374 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3739 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=516, Invalid=29240, Unknown=0, NotChecked=0, Total=29756 [2020-08-22 16:31:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-22 16:31:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 147. [2020-08-22 16:31:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-22 16:31:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2020-08-22 16:31:51,446 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 295 [2020-08-22 16:31:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:31:51,446 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2020-08-22 16:31:51,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-08-22 16:31:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2020-08-22 16:31:51,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-22 16:31:51,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:31:51,449 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:31:51,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-08-22 16:31:51,662 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:31:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:31:51,663 INFO L82 PathProgramCache]: Analyzing trace with hash 235497567, now seen corresponding path program 20 times [2020-08-22 16:31:51,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:31:51,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275518947] [2020-08-22 16:31:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:31:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:31:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:31:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:52,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:52,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:52,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:53,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:53,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:55,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:55,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:56,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:31:59,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:31:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:00,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:02,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:04,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:32:07,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:32:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat