/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:15:53,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:15:53,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:15:53,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:15:53,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:15:53,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:15:53,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:15:53,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:15:53,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:15:53,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:15:53,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:15:53,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:15:53,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:15:53,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:15:53,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:15:53,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:15:53,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:15:53,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:15:53,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:15:53,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:15:53,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:15:53,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:15:53,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:15:53,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:15:53,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:15:53,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:15:53,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:15:53,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:15:53,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:15:53,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:15:53,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:15:53,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:15:53,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:15:53,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:15:53,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:15:53,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:15:53,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:15:53,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:15:53,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:15:53,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:15:53,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:15:53,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:15:53,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:15:53,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:15:53,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:15:53,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:15:53,624 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:15:53,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:15:53,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:15:53,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:15:53,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:15:53,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:15:53,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:15:53,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:15:53,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:15:53,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:15:53,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:15:53,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:15:53,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:15:53,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:15:53,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:15:53,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:15:53,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:15:53,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:15:53,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:15:53,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:15:53,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:15:53,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:15:53,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:15:53,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:15:53,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:15:53,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:15:53,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:15:53,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:15:53,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:15:53,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:15:53,929 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:15:53,930 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:53,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d0434489/ec1d360b924a47c3986140cebd245cb1/FLAGd49f1b299 [2020-10-13 13:15:54,518 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:15:54,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:54,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d0434489/ec1d360b924a47c3986140cebd245cb1/FLAGd49f1b299 [2020-10-13 13:15:54,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d0434489/ec1d360b924a47c3986140cebd245cb1 [2020-10-13 13:15:54,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:15:54,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:15:54,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:54,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:15:54,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:15:54,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:54" (1/1) ... [2020-10-13 13:15:54,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21046f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:54, skipping insertion in model container [2020-10-13 13:15:54,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:54" (1/1) ... [2020-10-13 13:15:54,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:15:54,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:15:55,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:55,300 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:15:55,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:55,398 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:15:55,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55 WrapperNode [2020-10-13 13:15:55,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:55,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:15:55,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:15:55,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:15:55,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (1/1) ... [2020-10-13 13:15:55,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (1/1) ... [2020-10-13 13:15:55,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (1/1) ... [2020-10-13 13:15:55,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (1/1) ... [2020-10-13 13:15:55,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (1/1) ... [2020-10-13 13:15:55,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (1/1) ... [2020-10-13 13:15:55,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (1/1) ... [2020-10-13 13:15:55,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:15:55,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:15:55,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:15:55,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:15:55,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-13 13:15:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:15:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:15:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:15:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:15:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:15:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:15:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:15:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:15:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:15:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:15:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:15:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:15:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:15:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:15:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:15:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:15:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:15:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:15:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:15:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:15:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:15:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:15:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:15:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:15:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:15:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:15:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:15:56,322 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:15:56,323 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:15:56,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:56 BoogieIcfgContainer [2020-10-13 13:15:56,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:15:56,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:15:56,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:15:56,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:15:56,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:15:54" (1/3) ... [2020-10-13 13:15:56,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d76dac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:56, skipping insertion in model container [2020-10-13 13:15:56,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:55" (2/3) ... [2020-10-13 13:15:56,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d76dac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:56, skipping insertion in model container [2020-10-13 13:15:56,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:56" (3/3) ... [2020-10-13 13:15:56,337 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:56,348 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:15:56,356 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:15:56,370 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:15:56,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:15:56,395 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:15:56,395 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:15:56,395 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:15:56,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:15:56,396 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:15:56,396 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:15:56,396 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:15:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-13 13:15:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:15:56,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:56,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:56,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:56,437 INFO L82 PathProgramCache]: Analyzing trace with hash -697851026, now seen corresponding path program 1 times [2020-10-13 13:15:56,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:56,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910656821] [2020-10-13 13:15:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:15:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-13 13:15:57,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:15:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:15:57,307 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:57,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:15:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:57,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:15:57,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:15:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:57,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:15:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:15:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:57,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:57,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:15:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:57,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:15:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:57,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:15:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:57,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:15:57,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910656821] [2020-10-13 13:15:57,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:57,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:15:57,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360210569] [2020-10-13 13:15:57,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:15:57,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:57,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:15:57,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:15:57,629 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 6 states. [2020-10-13 13:15:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:58,659 INFO L93 Difference]: Finished difference Result 272 states and 432 transitions. [2020-10-13 13:15:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:15:58,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-13 13:15:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:58,676 INFO L225 Difference]: With dead ends: 272 [2020-10-13 13:15:58,676 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 13:15:58,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 13:15:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 159. [2020-10-13 13:15:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 13:15:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 255 transitions. [2020-10-13 13:15:58,746 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 255 transitions. Word has length 62 [2020-10-13 13:15:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:58,747 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 255 transitions. [2020-10-13 13:15:58,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:15:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 255 transitions. [2020-10-13 13:15:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:15:58,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:58,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:58,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:15:58,751 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:58,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:58,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1541856528, now seen corresponding path program 1 times [2020-10-13 13:15:58,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:58,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999593382] [2020-10-13 13:15:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:59,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:15:59,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-13 13:15:59,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:15:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:15:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:59,727 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:59,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:59,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:59,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:59,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:59,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:15:59,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 13:15:59,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:15:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:59,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:15:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:59,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:59,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:59,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:59,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:15:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:59,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:15:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:59,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:59,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:59,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:16:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:00,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:16:00,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:16:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:16:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:00,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:00,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:00,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:00,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:00,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:00,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:00,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:00,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999593382] [2020-10-13 13:16:00,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:00,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:16:00,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517915627] [2020-10-13 13:16:00,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:16:00,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:00,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:16:00,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:16:00,176 INFO L87 Difference]: Start difference. First operand 159 states and 255 transitions. Second operand 12 states. [2020-10-13 13:16:00,650 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:00,837 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:16:01,145 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:16:01,360 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:16:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:02,828 INFO L93 Difference]: Finished difference Result 270 states and 424 transitions. [2020-10-13 13:16:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:16:02,829 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-13 13:16:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:02,833 INFO L225 Difference]: With dead ends: 270 [2020-10-13 13:16:02,833 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 13:16:02,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:16:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 13:16:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 159. [2020-10-13 13:16:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 13:16:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 228 transitions. [2020-10-13 13:16:02,856 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 228 transitions. Word has length 62 [2020-10-13 13:16:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:02,857 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 228 transitions. [2020-10-13 13:16:02,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:16:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 228 transitions. [2020-10-13 13:16:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:16:02,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:02,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:02,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:16:02,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1465750151, now seen corresponding path program 1 times [2020-10-13 13:16:02,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:02,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173016022] [2020-10-13 13:16:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:02,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:07,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:07,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:16:07,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:16:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:16:07,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:16:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:16:07,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:08,105 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:08,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:08,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:08,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:08,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:16:08,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:16:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:08,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:08,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:08,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:08,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:08,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 13:16:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:16:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:08,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:08,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:08,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:08,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:08,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:08,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:08,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:08,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:08,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:16:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:08,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:08,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:08,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:08,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:08,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173016022] [2020-10-13 13:16:08,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:08,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:08,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944402517] [2020-10-13 13:16:08,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:08,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:08,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:08,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:08,440 INFO L87 Difference]: Start difference. First operand 159 states and 228 transitions. Second operand 9 states. [2020-10-13 13:16:08,605 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:10,424 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:16:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:10,966 INFO L93 Difference]: Finished difference Result 379 states and 567 transitions. [2020-10-13 13:16:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:16:10,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 13:16:10,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:10,973 INFO L225 Difference]: With dead ends: 379 [2020-10-13 13:16:10,973 INFO L226 Difference]: Without dead ends: 289 [2020-10-13 13:16:10,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:16:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-13 13:16:11,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-10-13 13:16:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 13:16:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 364 transitions. [2020-10-13 13:16:11,025 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 364 transitions. Word has length 88 [2020-10-13 13:16:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:11,026 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 364 transitions. [2020-10-13 13:16:11,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 364 transitions. [2020-10-13 13:16:11,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:16:11,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:11,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:11,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:16:11,031 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:11,032 INFO L82 PathProgramCache]: Analyzing trace with hash 547096246, now seen corresponding path program 1 times [2020-10-13 13:16:11,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:11,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506632972] [2020-10-13 13:16:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:16:16,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:16:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:16:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:16:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 13:16:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:16:16,267 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:16,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:16:16,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:16,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:16,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:16:16,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:16:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:16,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:16,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:16,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:16,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:16:16,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:16,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:16:16,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:16,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:16:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:16,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:16,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:16:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:16,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:16,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:16,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:16,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:16,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:16,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506632972] [2020-10-13 13:16:16,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:16,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:16,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531465304] [2020-10-13 13:16:16,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:16,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:16,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:16,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:16,542 INFO L87 Difference]: Start difference. First operand 250 states and 364 transitions. Second operand 9 states. [2020-10-13 13:16:16,735 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:18,710 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:16:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:19,041 INFO L93 Difference]: Finished difference Result 680 states and 1014 transitions. [2020-10-13 13:16:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:16:19,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:16:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:19,047 INFO L225 Difference]: With dead ends: 680 [2020-10-13 13:16:19,047 INFO L226 Difference]: Without dead ends: 499 [2020-10-13 13:16:19,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:16:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-13 13:16:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 433. [2020-10-13 13:16:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-13 13:16:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 642 transitions. [2020-10-13 13:16:19,097 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 642 transitions. Word has length 90 [2020-10-13 13:16:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:19,097 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 642 transitions. [2020-10-13 13:16:19,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 642 transitions. [2020-10-13 13:16:19,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:16:19,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:19,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:19,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:16:19,102 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:19,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:19,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1541695387, now seen corresponding path program 1 times [2020-10-13 13:16:19,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:19,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904529563] [2020-10-13 13:16:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:16:24,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:24,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:16:24,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:16:24,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:16:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 13:16:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,365 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:24,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:24,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:16:24,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:24,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 13:16:24,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:16:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:24,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:24,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:24,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:24,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:24,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:24,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:16:24,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:24,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:24,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:16:24,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:24,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:16:24,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:16:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:24,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:24,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:16:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:16:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:24,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904529563] [2020-10-13 13:16:24,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:24,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:16:24,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820981198] [2020-10-13 13:16:24,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:16:24,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:24,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:16:24,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:16:24,821 INFO L87 Difference]: Start difference. First operand 433 states and 642 transitions. Second operand 13 states. [2020-10-13 13:16:25,016 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:25,395 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:25,543 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:27,370 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:27,520 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:27,742 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:31,497 INFO L93 Difference]: Finished difference Result 2578 states and 3954 transitions. [2020-10-13 13:16:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 13:16:31,498 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-10-13 13:16:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:31,512 INFO L225 Difference]: With dead ends: 2578 [2020-10-13 13:16:31,512 INFO L226 Difference]: Without dead ends: 2214 [2020-10-13 13:16:31,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=588, Invalid=1962, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 13:16:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2020-10-13 13:16:31,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1902. [2020-10-13 13:16:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-10-13 13:16:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2919 transitions. [2020-10-13 13:16:31,670 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2919 transitions. Word has length 92 [2020-10-13 13:16:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:31,670 INFO L479 AbstractCegarLoop]: Abstraction has 1902 states and 2919 transitions. [2020-10-13 13:16:31,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:16:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2919 transitions. [2020-10-13 13:16:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 13:16:31,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:31,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:31,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:16:31,674 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash 429127030, now seen corresponding path program 1 times [2020-10-13 13:16:31,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:31,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491698903] [2020-10-13 13:16:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:16:36,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:16:36,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:16:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 13:16:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,880 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:36,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:36,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:16:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:16:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:36,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:36,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:36,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:36,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:36,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:36,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:36,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:37,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:37,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:37,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:37,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:37,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:37,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:37,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:37,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:37,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:37,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:37,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:37,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:37,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:16:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:37,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:37,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:16:37,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:37,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:37,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:16:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:37,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491698903] [2020-10-13 13:16:37,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:37,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:37,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778428303] [2020-10-13 13:16:37,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:37,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:37,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:37,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:37,127 INFO L87 Difference]: Start difference. First operand 1902 states and 2919 transitions. Second operand 9 states. [2020-10-13 13:16:37,307 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:39,390 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:16:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:39,773 INFO L93 Difference]: Finished difference Result 5488 states and 8427 transitions. [2020-10-13 13:16:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:16:39,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-13 13:16:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:39,795 INFO L225 Difference]: With dead ends: 5488 [2020-10-13 13:16:39,796 INFO L226 Difference]: Without dead ends: 3655 [2020-10-13 13:16:39,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:16:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2020-10-13 13:16:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3133. [2020-10-13 13:16:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3133 states. [2020-10-13 13:16:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4834 transitions. [2020-10-13 13:16:40,015 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4834 transitions. Word has length 93 [2020-10-13 13:16:40,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:40,016 INFO L479 AbstractCegarLoop]: Abstraction has 3133 states and 4834 transitions. [2020-10-13 13:16:40,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:40,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4834 transitions. [2020-10-13 13:16:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 13:16:40,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:40,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:40,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:16:40,020 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:40,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:40,020 INFO L82 PathProgramCache]: Analyzing trace with hash -483419033, now seen corresponding path program 1 times [2020-10-13 13:16:40,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:40,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186382776] [2020-10-13 13:16:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:42,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:45,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:45,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 13:16:45,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:16:45,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:16:45,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:16:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:16:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:16:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:45,215 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:45,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:45,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:45,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:45,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:45,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:45,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:45,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:45,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:45,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:16:45,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:16:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:45,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:45,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:45,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:45,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:45,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:45,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:45,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:45,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:45,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:16:45,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:45,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:45,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:45,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:45,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:45,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:45,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:45,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:45,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:16:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:45,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:45,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:45,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:16:45,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:45,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:16:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:16:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:45,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186382776] [2020-10-13 13:16:45,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:45,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:16:45,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175519969] [2020-10-13 13:16:45,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:16:45,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:45,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:16:45,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:16:45,554 INFO L87 Difference]: Start difference. First operand 3133 states and 4834 transitions. Second operand 10 states. [2020-10-13 13:16:45,727 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:46,158 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:47,783 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:47,944 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:50,299 INFO L93 Difference]: Finished difference Result 10239 states and 15893 transitions. [2020-10-13 13:16:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:16:50,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-13 13:16:50,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:50,340 INFO L225 Difference]: With dead ends: 10239 [2020-10-13 13:16:50,340 INFO L226 Difference]: Without dead ends: 7175 [2020-10-13 13:16:50,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:16:50,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-10-13 13:16:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 6266. [2020-10-13 13:16:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6266 states. [2020-10-13 13:16:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 9754 transitions. [2020-10-13 13:16:50,749 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 9754 transitions. Word has length 95 [2020-10-13 13:16:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:50,750 INFO L479 AbstractCegarLoop]: Abstraction has 6266 states and 9754 transitions. [2020-10-13 13:16:50,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:16:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 9754 transitions. [2020-10-13 13:16:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:16:50,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:50,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:50,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:16:50,755 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:50,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1175729301, now seen corresponding path program 1 times [2020-10-13 13:16:50,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:50,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481554409] [2020-10-13 13:16:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:55,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:16:55,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:16:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:16:55,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:16:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:16:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:55,974 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:55,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:55,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:55,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:55,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:55,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:55,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:55,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:55,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:55,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:56,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:16:56,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:56,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:56,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:56,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:56,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:16:56,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:16:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:56,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:56,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:56,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:56,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:16:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:56,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:56,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:56,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481554409] [2020-10-13 13:16:56,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:56,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:56,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54473328] [2020-10-13 13:16:56,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:56,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:56,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:56,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:56,221 INFO L87 Difference]: Start difference. First operand 6266 states and 9754 transitions. Second operand 9 states. [2020-10-13 13:16:56,399 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:56,566 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:56,739 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:16:56,938 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:57,627 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:59,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:59,993 INFO L93 Difference]: Finished difference Result 19704 states and 31039 transitions. [2020-10-13 13:16:59,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:16:59,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 13:16:59,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:00,068 INFO L225 Difference]: With dead ends: 19704 [2020-10-13 13:17:00,069 INFO L226 Difference]: Without dead ends: 13452 [2020-10-13 13:17:00,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:17:00,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13452 states. [2020-10-13 13:17:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13452 to 12310. [2020-10-13 13:17:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12310 states. [2020-10-13 13:17:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12310 states to 12310 states and 18847 transitions. [2020-10-13 13:17:00,786 INFO L78 Accepts]: Start accepts. Automaton has 12310 states and 18847 transitions. Word has length 96 [2020-10-13 13:17:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:00,787 INFO L479 AbstractCegarLoop]: Abstraction has 12310 states and 18847 transitions. [2020-10-13 13:17:00,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:17:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 12310 states and 18847 transitions. [2020-10-13 13:17:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:17:00,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:00,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:17:00,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:17:00,794 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:00,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1451666691, now seen corresponding path program 1 times [2020-10-13 13:17:00,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:00,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618547817] [2020-10-13 13:17:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:17:05,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:17:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:17:05,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:17:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:17:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,992 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:06,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:06,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:06,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:17:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:17:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:06,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:06,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:06,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:06,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:06,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:06,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:06,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:17:06,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:17:06,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:17:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:06,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:17:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:06,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:06,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:06,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:06,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:17:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:06,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:06,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:06,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:06,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 13:17:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:06,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:17:06,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:06,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:06,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:17:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:06,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618547817] [2020-10-13 13:17:06,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:06,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:17:06,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127488351] [2020-10-13 13:17:06,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:17:06,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:06,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:17:06,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:17:06,271 INFO L87 Difference]: Start difference. First operand 12310 states and 18847 transitions. Second operand 8 states. [2020-10-13 13:17:06,456 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:07,771 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:17:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:09,145 INFO L93 Difference]: Finished difference Result 32036 states and 49287 transitions. [2020-10-13 13:17:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:17:09,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-13 13:17:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:09,262 INFO L225 Difference]: With dead ends: 32036 [2020-10-13 13:17:09,263 INFO L226 Difference]: Without dead ends: 21810 [2020-10-13 13:17:09,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:17:09,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21810 states. [2020-10-13 13:17:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21810 to 19836. [2020-10-13 13:17:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19836 states. [2020-10-13 13:17:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19836 states to 19836 states and 30023 transitions. [2020-10-13 13:17:10,376 INFO L78 Accepts]: Start accepts. Automaton has 19836 states and 30023 transitions. Word has length 97 [2020-10-13 13:17:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:10,377 INFO L479 AbstractCegarLoop]: Abstraction has 19836 states and 30023 transitions. [2020-10-13 13:17:10,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:17:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 19836 states and 30023 transitions. [2020-10-13 13:17:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:17:10,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:10,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:17:10,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:17:10,380 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:10,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1511141907, now seen corresponding path program 1 times [2020-10-13 13:17:10,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:10,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418340839] [2020-10-13 13:17:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:10,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:12,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:15,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:17:15,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:17:15,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:17:15,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:17:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:17:15,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:15,544 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:15,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:15,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:15,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:15,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:17:15,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:17:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:17:15,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:17:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:17:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:15,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:17:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:15,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:15,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:15,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:17:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:15,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:17:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:15,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:15,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:15,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:15,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:17:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:15,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:15,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:15,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:15,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:17:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:15,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:15,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:15,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:15,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:17:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:15,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:15,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:15,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:15,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418340839] [2020-10-13 13:17:15,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:15,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:17:15,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378496555] [2020-10-13 13:17:15,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:17:15,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:15,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:17:15,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:17:15,718 INFO L87 Difference]: Start difference. First operand 19836 states and 30023 transitions. Second operand 7 states. [2020-10-13 13:17:15,903 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:17,535 INFO L93 Difference]: Finished difference Result 31678 states and 47802 transitions. [2020-10-13 13:17:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:17:17,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 13:17:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:17,591 INFO L225 Difference]: With dead ends: 31678 [2020-10-13 13:17:17,592 INFO L226 Difference]: Without dead ends: 21904 [2020-10-13 13:17:17,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:17:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21904 states. [2020-10-13 13:17:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21904 to 19838. [2020-10-13 13:17:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19838 states. [2020-10-13 13:17:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19838 states to 19838 states and 30025 transitions. [2020-10-13 13:17:18,452 INFO L78 Accepts]: Start accepts. Automaton has 19838 states and 30025 transitions. Word has length 97 [2020-10-13 13:17:18,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:18,453 INFO L479 AbstractCegarLoop]: Abstraction has 19838 states and 30025 transitions. [2020-10-13 13:17:18,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:17:18,453 INFO L276 IsEmpty]: Start isEmpty. Operand 19838 states and 30025 transitions. [2020-10-13 13:17:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:17:18,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:18,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:17:18,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:17:18,456 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash 933735654, now seen corresponding path program 1 times [2020-10-13 13:17:18,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:18,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922093193] [2020-10-13 13:17:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:18,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:23,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:23,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:17:23,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:17:23,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:17:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:17:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:23,659 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:23,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:23,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:23,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:23,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:23,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:23,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:23,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:23,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:23,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:23,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:17:23,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:23,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:23,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:23,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:17:23,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:23,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:23,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:23,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:23,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:23,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:23,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:23,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:23,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:23,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:17:23,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:23,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:23,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:17:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:17:23,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:17:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:23,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:23,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:23,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:17:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:23,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:23,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:23,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:23,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:17:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:23,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922093193] [2020-10-13 13:17:23,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:23,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:23,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714194489] [2020-10-13 13:17:23,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:23,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:23,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:23,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:23,927 INFO L87 Difference]: Start difference. First operand 19838 states and 30025 transitions. Second operand 10 states. [2020-10-13 13:17:24,116 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:24,571 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:25,959 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:26,126 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:30,079 INFO L93 Difference]: Finished difference Result 71114 states and 107916 transitions. [2020-10-13 13:17:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:17:30,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-13 13:17:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:30,274 INFO L225 Difference]: With dead ends: 71114 [2020-10-13 13:17:30,274 INFO L226 Difference]: Without dead ends: 51410 [2020-10-13 13:17:30,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:17:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51410 states. [2020-10-13 13:17:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51410 to 45572. [2020-10-13 13:17:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45572 states. [2020-10-13 13:17:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45572 states to 45572 states and 69401 transitions. [2020-10-13 13:17:32,489 INFO L78 Accepts]: Start accepts. Automaton has 45572 states and 69401 transitions. Word has length 98 [2020-10-13 13:17:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:32,489 INFO L479 AbstractCegarLoop]: Abstraction has 45572 states and 69401 transitions. [2020-10-13 13:17:32,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:17:32,489 INFO L276 IsEmpty]: Start isEmpty. Operand 45572 states and 69401 transitions. [2020-10-13 13:17:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:17:32,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:32,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:17:32,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:17:32,492 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:32,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:32,493 INFO L82 PathProgramCache]: Analyzing trace with hash -245291901, now seen corresponding path program 1 times [2020-10-13 13:17:32,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:32,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540514559] [2020-10-13 13:17:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:32,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:37,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:17:37,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:17:37,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:17:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:17:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:37,686 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:37,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:37,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:37,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:37,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:37,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:37,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:17:37,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:17:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:37,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:37,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:37,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:37,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:37,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:37,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:17:37,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:37,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:37,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:37,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:17:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:37,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:37,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:37,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:37,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:17:37,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:37,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:17:37,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:17:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:37,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:17:37,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:37,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:17:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:37,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540514559] [2020-10-13 13:17:37,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:37,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:37,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643186658] [2020-10-13 13:17:37,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:37,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:37,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:37,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:37,905 INFO L87 Difference]: Start difference. First operand 45572 states and 69401 transitions. Second operand 10 states. [2020-10-13 13:17:38,093 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:38,545 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:39,477 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:39,621 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:46,411 INFO L93 Difference]: Finished difference Result 192818 states and 295536 transitions. [2020-10-13 13:17:46,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:17:46,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-13 13:17:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:46,900 INFO L225 Difference]: With dead ends: 192818 [2020-10-13 13:17:46,900 INFO L226 Difference]: Without dead ends: 147380 [2020-10-13 13:17:47,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:17:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147380 states. [2020-10-13 13:17:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147380 to 128832. [2020-10-13 13:17:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128832 states. [2020-10-13 13:17:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128832 states to 128832 states and 198533 transitions. [2020-10-13 13:17:54,976 INFO L78 Accepts]: Start accepts. Automaton has 128832 states and 198533 transitions. Word has length 99 [2020-10-13 13:17:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:54,977 INFO L479 AbstractCegarLoop]: Abstraction has 128832 states and 198533 transitions. [2020-10-13 13:17:54,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:17:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 128832 states and 198533 transitions. [2020-10-13 13:17:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:17:54,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:54,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:17:54,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:17:54,980 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:54,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:54,981 INFO L82 PathProgramCache]: Analyzing trace with hash -760811580, now seen corresponding path program 1 times [2020-10-13 13:17:54,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:54,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166866385] [2020-10-13 13:17:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:00,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:00,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:18:00,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:18:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:18:00,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:18:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:18:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:18:00,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:00,166 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:18:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:18:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:00,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:00,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:18:00,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:18:00,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:00,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:18:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:00,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:00,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:00,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:18:00,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:18:00,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 13:18:00,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:00,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:18:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:00,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:00,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:00,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:18:00,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:18:00,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:18:00,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:00,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:18:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:00,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:00,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:18:00,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:18:00,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:18:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:18:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:00,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:00,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:00,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:18:00,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:18:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:18:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:00,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:00,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:18:00,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:00,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:18:00,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:00,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:18:00,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:18:00,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:18:00,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:18:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:00,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:00,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:00,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:18:00,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:18:00,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:18:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:00,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:18:00,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166866385] [2020-10-13 13:18:00,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:18:00,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:18:00,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501849143] [2020-10-13 13:18:00,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:18:00,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:18:00,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:18:00,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:18:00,351 INFO L87 Difference]: Start difference. First operand 128832 states and 198533 transitions. Second operand 8 states. [2020-10-13 13:18:00,520 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:18:02,084 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:18:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:18:12,326 INFO L93 Difference]: Finished difference Result 341828 states and 526909 transitions. [2020-10-13 13:18:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:18:12,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-13 13:18:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:18:13,087 INFO L225 Difference]: With dead ends: 341828 [2020-10-13 13:18:13,088 INFO L226 Difference]: Without dead ends: 228658 [2020-10-13 13:18:13,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:18:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228658 states. [2020-10-13 13:18:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228658 to 210239. [2020-10-13 13:18:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210239 states. [2020-10-13 13:18:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210239 states to 210239 states and 318394 transitions. [2020-10-13 13:18:24,597 INFO L78 Accepts]: Start accepts. Automaton has 210239 states and 318394 transitions. Word has length 99 [2020-10-13 13:18:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:18:24,598 INFO L479 AbstractCegarLoop]: Abstraction has 210239 states and 318394 transitions. [2020-10-13 13:18:24,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:18:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 210239 states and 318394 transitions. [2020-10-13 13:18:24,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:18:24,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:18:24,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:18:24,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:18:24,600 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:18:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:18:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1778123419, now seen corresponding path program 1 times [2020-10-13 13:18:24,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:18:24,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647131050] [2020-10-13 13:18:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:18:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:24,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:29,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:18:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:18:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:18:29,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:18:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:18:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:18:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:29,778 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:18:29,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:18:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:32,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:32,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:18:32,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3144 [2020-10-13 13:18:32,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:18:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:32,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:32,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:32,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:33,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:18:33,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:18:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:18:33,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:18:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:18:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:18:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:33,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:18:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:33,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:33,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:18:33,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:18:33,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:18:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:18:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:33,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:33,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:33,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:33,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:18:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:33,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:33,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:18:33,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:18:33,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:18:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:18:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:33,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:33,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:33,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:18:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:18:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:33,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:33,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:18:33,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:33,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:18:33,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:18:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:18:33,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647131050] [2020-10-13 13:18:33,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:18:33,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:18:33,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511994853] [2020-10-13 13:18:33,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:18:33,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:18:33,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:18:33,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:18:33,168 INFO L87 Difference]: Start difference. First operand 210239 states and 318394 transitions. Second operand 8 states. [2020-10-13 13:18:33,412 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:18:33,597 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:18:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:18:41,810 INFO L93 Difference]: Finished difference Result 438875 states and 663599 transitions. [2020-10-13 13:18:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:18:41,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-13 13:18:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:18:42,371 INFO L225 Difference]: With dead ends: 438875 [2020-10-13 13:18:42,372 INFO L226 Difference]: Without dead ends: 228653 [2020-10-13 13:18:42,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:18:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228653 states. [2020-10-13 13:18:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228653 to 210236. [2020-10-13 13:18:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210236 states. [2020-10-13 13:18:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210236 states to 210236 states and 318388 transitions. [2020-10-13 13:18:57,363 INFO L78 Accepts]: Start accepts. Automaton has 210236 states and 318388 transitions. Word has length 99 [2020-10-13 13:18:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:18:57,363 INFO L479 AbstractCegarLoop]: Abstraction has 210236 states and 318388 transitions. [2020-10-13 13:18:57,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:18:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 210236 states and 318388 transitions. [2020-10-13 13:18:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:18:57,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:18:57,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:18:57,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:18:57,366 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:18:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:18:57,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1029999628, now seen corresponding path program 1 times [2020-10-13 13:18:57,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:18:57,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299371799] [2020-10-13 13:18:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:18:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:57,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:02,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:19:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:19:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:19:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:19:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:19:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:19:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:02,571 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:19:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:19:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:02,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:19:02,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:19:02,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:19:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:19:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:19:02,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:19:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:02,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:19:02,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:02,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:19:02,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:19:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:19:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:19:02,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:19:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:02,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:19:02,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:02,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:19:02,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:02,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:19:02,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:19:02,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:19:02,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:02,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:19:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:02,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:19:02,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:19:02,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:19:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:19:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:19:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:19:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:02,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:19:02,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:19:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:19:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:19:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:19:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:02,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:19:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:02,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:19:02,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:02,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:19:02,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:02,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:19:02,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:19:02,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:19:02,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:02,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:19:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:02,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:02,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:19:02,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:19:02,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:19:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:19:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:19:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:19:02,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299371799] [2020-10-13 13:19:02,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:19:02,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:19:02,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287419543] [2020-10-13 13:19:02,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:19:02,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:19:02,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:19:02,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:19:02,783 INFO L87 Difference]: Start difference. First operand 210236 states and 318388 transitions. Second operand 8 states. [2020-10-13 13:19:02,960 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:19:06,723 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 155