/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_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:36:26,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:36:26,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:36:26,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:36:26,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:36:26,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:36:26,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:36:26,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:36:26,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:36:26,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:36:26,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:36:26,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:36:26,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:36:26,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:36:26,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:36:26,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:36:26,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:36:26,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:36:26,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:36:26,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:36:26,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:36:26,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:36:26,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:36:26,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:36:26,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:36:26,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:36:26,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:36:26,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:36:26,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:36:26,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:36:26,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:36:26,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:36:26,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:36:26,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:36:26,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:36:26,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:36:26,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:36:26,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:36:26,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:36:26,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:36:26,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:36:26,625 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 13:36:26,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:36:26,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:36:26,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:36:26,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:36:26,671 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:36:26,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:36:26,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:36:26,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:36:26,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:36:26,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:36:26,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:36:26,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:36:26,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:36:26,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:36:26,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:36:26,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:36:26,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:36:26,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:36:26,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:36:26,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:36:26,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:36:26,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:36:26,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:36:26,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:36:26,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:36:26,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:36:26,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:36:26,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:36:26,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:36:26,677 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 13:36:26,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:36:27,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:36:27,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:36:27,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:36:27,027 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:36:27,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-13 13:36:27,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9f4e0ec/051ed89b0b6f4c9690dfb70f02acef80/FLAGd2f11238e [2020-10-13 13:36:27,631 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:36:27,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-13 13:36:27,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9f4e0ec/051ed89b0b6f4c9690dfb70f02acef80/FLAGd2f11238e [2020-10-13 13:36:27,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9f4e0ec/051ed89b0b6f4c9690dfb70f02acef80 [2020-10-13 13:36:27,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:36:27,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:36:27,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:36:27,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:36:27,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:36:27,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:36:27" (1/1) ... [2020-10-13 13:36:27,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6e25e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:27, skipping insertion in model container [2020-10-13 13:36:27,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:36:27" (1/1) ... [2020-10-13 13:36:27,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:36:28,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:36:28,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:36:28,352 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:36:28,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:36:28,440 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:36:28,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28 WrapperNode [2020-10-13 13:36:28,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:36:28,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:36:28,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:36:28,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:36:28,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (1/1) ... [2020-10-13 13:36:28,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (1/1) ... [2020-10-13 13:36:28,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (1/1) ... [2020-10-13 13:36:28,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (1/1) ... [2020-10-13 13:36:28,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (1/1) ... [2020-10-13 13:36:28,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (1/1) ... [2020-10-13 13:36:28,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (1/1) ... [2020-10-13 13:36:28,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:36:28,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:36:28,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:36:28,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:36:28,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (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 13:36:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:36:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:36:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:36:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:36:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:36:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:36:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:36:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:36:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:36:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:36:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:36:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:36:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:36:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:36:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:36:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:36:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:36:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:36:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:36:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:36:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:36:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:36:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:36:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:36:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:36:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:36:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:36:29,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:36:29,393 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:36:29,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:36:29 BoogieIcfgContainer [2020-10-13 13:36:29,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:36:29,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:36:29,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:36:29,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:36:29,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:36:27" (1/3) ... [2020-10-13 13:36:29,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590db818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:36:29, skipping insertion in model container [2020-10-13 13:36:29,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:36:28" (2/3) ... [2020-10-13 13:36:29,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590db818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:36:29, skipping insertion in model container [2020-10-13 13:36:29,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:36:29" (3/3) ... [2020-10-13 13:36:29,410 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-13 13:36:29,420 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:36:29,428 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:36:29,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:36:29,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:36:29,466 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:36:29,466 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:36:29,466 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:36:29,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:36:29,467 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:36:29,467 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:36:29,467 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:36:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-10-13 13:36:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:36:29,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:29,507 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] [2020-10-13 13:36:29,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:29,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1583782225, now seen corresponding path program 1 times [2020-10-13 13:36:29,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:29,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063858134] [2020-10-13 13:36:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:30,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:30,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:36:30,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-13 13:36:30,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:36:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:36:30,459 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:30,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:30,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:30,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:30,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:30,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:36:30,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:30,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:30,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:30,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:36:30,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:30,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:36:30,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:36:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:30,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:30,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:30,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:30,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:36:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:36:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:30,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:30,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:30,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:30,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:30,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:30,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:36:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:30,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:30,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:30,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:30,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:30,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:30,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:30,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:30,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:30,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:36:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:30,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:30,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:30,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:30,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:30,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:30,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:30,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:30,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:30,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:30,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:30,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:30,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:30,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:30,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:30,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:30,767 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 13:36:30,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063858134] [2020-10-13 13:36:30,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:30,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:36:30,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498900524] [2020-10-13 13:36:30,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:36:30,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:30,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:36:30,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:36:30,797 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 6 states. [2020-10-13 13:36:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:31,946 INFO L93 Difference]: Finished difference Result 302 states and 480 transitions. [2020-10-13 13:36:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:36:31,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 13:36:31,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:31,966 INFO L225 Difference]: With dead ends: 302 [2020-10-13 13:36:31,966 INFO L226 Difference]: Without dead ends: 192 [2020-10-13 13:36:31,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-13 13:36:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2020-10-13 13:36:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 13:36:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 279 transitions. [2020-10-13 13:36:32,027 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 279 transitions. Word has length 65 [2020-10-13 13:36:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:32,027 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 279 transitions. [2020-10-13 13:36:32,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:36:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 279 transitions. [2020-10-13 13:36:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:36:32,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:32,031 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] [2020-10-13 13:36:32,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:36:32,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:32,032 INFO L82 PathProgramCache]: Analyzing trace with hash 554422927, now seen corresponding path program 1 times [2020-10-13 13:36:32,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:32,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092821555] [2020-10-13 13:36:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:32,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:32,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:36:32,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-13 13:36:32,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:36:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:36:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:36:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:32,916 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:32,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:32,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:32,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:32,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:36:32,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:32,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:32,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:32,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:36:32,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:32,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:36:32,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:36:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:36:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:33,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:33,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:36:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:33,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:36:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:33,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:36:33,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:33,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:36:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:33,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:33,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:36:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:33,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:33,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:33,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:33,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:33,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:33,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:33,271 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 13:36:33,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092821555] [2020-10-13 13:36:33,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:33,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:36:33,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537251597] [2020-10-13 13:36:33,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:36:33,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:33,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:36:33,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:36:33,277 INFO L87 Difference]: Start difference. First operand 174 states and 279 transitions. Second operand 12 states. [2020-10-13 13:36:33,742 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:33,933 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:36:34,202 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:34,379 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:36:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:35,882 INFO L93 Difference]: Finished difference Result 300 states and 472 transitions. [2020-10-13 13:36:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:36:35,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-13 13:36:35,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:35,888 INFO L225 Difference]: With dead ends: 300 [2020-10-13 13:36:35,888 INFO L226 Difference]: Without dead ends: 192 [2020-10-13 13:36:35,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:36:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-13 13:36:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2020-10-13 13:36:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 13:36:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-10-13 13:36:35,916 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 65 [2020-10-13 13:36:35,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:35,916 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-10-13 13:36:35,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:36:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-10-13 13:36:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:36:35,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:35,920 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] [2020-10-13 13:36:35,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:36:35,921 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:35,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash 551989973, now seen corresponding path program 1 times [2020-10-13 13:36:35,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:35,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51834975] [2020-10-13 13:36:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:40,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:40,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:36:40,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:36:40,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:36:40,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:36:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:36:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:41,165 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:41,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:41,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:41,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:36:41,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:36:41,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:36:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:41,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:41,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:41,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:36:41,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:36:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:36:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:41,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:41,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:36:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:41,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:41,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:36:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:41,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:41,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:41,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:41,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:41,483 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 13:36:41,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51834975] [2020-10-13 13:36:41,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:41,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:41,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075320161] [2020-10-13 13:36:41,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:41,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:41,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:41,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:41,487 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 9 states. [2020-10-13 13:36:41,721 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:43,601 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:36:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:44,201 INFO L93 Difference]: Finished difference Result 424 states and 636 transitions. [2020-10-13 13:36:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:36:44,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:36:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:44,206 INFO L225 Difference]: With dead ends: 424 [2020-10-13 13:36:44,207 INFO L226 Difference]: Without dead ends: 322 [2020-10-13 13:36:44,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:36:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-13 13:36:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 277. [2020-10-13 13:36:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-13 13:36:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 403 transitions. [2020-10-13 13:36:44,241 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 403 transitions. Word has length 94 [2020-10-13 13:36:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:44,242 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 403 transitions. [2020-10-13 13:36:44,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:36:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 403 transitions. [2020-10-13 13:36:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:36:44,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:44,245 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 13:36:44,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:36:44,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:44,246 INFO L82 PathProgramCache]: Analyzing trace with hash 829961930, now seen corresponding path program 1 times [2020-10-13 13:36:44,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:44,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441716642] [2020-10-13 13:36:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:44,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:36:49,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:36:49,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:36:49,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:36:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:36:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:36:49,488 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:49,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:49,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:36:49,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:49,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:36:49,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:36:49,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:36:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:49,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:49,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:49,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:36:49,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:36:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:36:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:49,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:36:49,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:36:49,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:36:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:49,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:49,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:36:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:49,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:49,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:36:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:49,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:49,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:49,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:49,756 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 13:36:49,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441716642] [2020-10-13 13:36:49,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:49,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:49,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829970257] [2020-10-13 13:36:49,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:49,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:49,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:49,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:49,760 INFO L87 Difference]: Start difference. First operand 277 states and 403 transitions. Second operand 9 states. [2020-10-13 13:36:49,932 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:52,076 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:36:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:52,445 INFO L93 Difference]: Finished difference Result 767 states and 1149 transitions. [2020-10-13 13:36:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:36:52,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 13:36:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:52,454 INFO L225 Difference]: With dead ends: 767 [2020-10-13 13:36:52,454 INFO L226 Difference]: Without dead ends: 562 [2020-10-13 13:36:52,459 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 13:36:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-13 13:36:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 484. [2020-10-13 13:36:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-13 13:36:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 717 transitions. [2020-10-13 13:36:52,508 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 717 transitions. Word has length 96 [2020-10-13 13:36:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:52,509 INFO L479 AbstractCegarLoop]: Abstraction has 484 states and 717 transitions. [2020-10-13 13:36:52,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:36:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 717 transitions. [2020-10-13 13:36:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:36:52,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:52,511 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 13:36:52,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:36:52,512 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:52,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2005021003, now seen corresponding path program 1 times [2020-10-13 13:36:52,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:52,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229339014] [2020-10-13 13:36:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:52,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:54,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:36:57,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:36:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:36:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:36:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:36:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:36:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:57,780 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:57,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:57,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:36:57,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:57,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:36:57,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:36:57,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:36:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:57,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:36:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:57,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:57,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:57,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:57,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:57,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:57,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:57,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:57,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:57,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:57,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:58,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:58,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:36:58,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:58,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:58,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:36:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:58,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:58,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:36:58,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:36:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:58,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:58,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:58,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:36:58,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:36:58,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:36:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:58,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:58,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:58,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:58,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:58,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:36:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:36:58,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:58,220 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 13:36:58,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229339014] [2020-10-13 13:36:58,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:58,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:36:58,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103552695] [2020-10-13 13:36:58,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:36:58,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:58,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:36:58,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:36:58,223 INFO L87 Difference]: Start difference. First operand 484 states and 717 transitions. Second operand 13 states. [2020-10-13 13:36:58,406 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:58,837 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:59,022 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:01,070 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:01,240 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:01,467 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 13:37:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:05,241 INFO L93 Difference]: Finished difference Result 2921 states and 4475 transitions. [2020-10-13 13:37:05,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 13:37:05,244 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-10-13 13:37:05,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:05,265 INFO L225 Difference]: With dead ends: 2921 [2020-10-13 13:37:05,266 INFO L226 Difference]: Without dead ends: 2509 [2020-10-13 13:37:05,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 13:37:05,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2020-10-13 13:37:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2153. [2020-10-13 13:37:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-10-13 13:37:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3290 transitions. [2020-10-13 13:37:05,450 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3290 transitions. Word has length 98 [2020-10-13 13:37:05,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:05,451 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 3290 transitions. [2020-10-13 13:37:05,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:37:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3290 transitions. [2020-10-13 13:37:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:37:05,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:05,454 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 13:37:05,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:37:05,454 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:05,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:05,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1494122404, now seen corresponding path program 1 times [2020-10-13 13:37:05,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:05,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146545285] [2020-10-13 13:37:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:10,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:10,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:37:10,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:37:10,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:37:10,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:37:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:37:10,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:10,682 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:10,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:10,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:10,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:10,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:10,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:37:10,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:10,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:10,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:10,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:10,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:10,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:10,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:10,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:37:10,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:37:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:10,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:10,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:10,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:10,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:10,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:10,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:10,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:10,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:10,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:10,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:10,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:10,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:10,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:10,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:10,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:37:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:10,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:10,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:10,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:10,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:10,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:37:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:10,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:37:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:10,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:10,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:10,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:10,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:10,959 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 13:37:10,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146545285] [2020-10-13 13:37:10,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:10,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:10,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803658778] [2020-10-13 13:37:10,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:10,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:10,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:10,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:10,962 INFO L87 Difference]: Start difference. First operand 2153 states and 3290 transitions. Second operand 9 states. [2020-10-13 13:37:11,184 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:13,514 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:13,883 INFO L93 Difference]: Finished difference Result 6243 states and 9590 transitions. [2020-10-13 13:37:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:37:13,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-13 13:37:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:13,906 INFO L225 Difference]: With dead ends: 6243 [2020-10-13 13:37:13,906 INFO L226 Difference]: Without dead ends: 4162 [2020-10-13 13:37:13,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:37:13,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2020-10-13 13:37:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 3544. [2020-10-13 13:37:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2020-10-13 13:37:14,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5437 transitions. [2020-10-13 13:37:14,155 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5437 transitions. Word has length 99 [2020-10-13 13:37:14,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:14,157 INFO L479 AbstractCegarLoop]: Abstraction has 3544 states and 5437 transitions. [2020-10-13 13:37:14,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5437 transitions. [2020-10-13 13:37:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:37:14,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:14,160 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, 1, 1] [2020-10-13 13:37:14,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:37:14,161 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:14,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:14,161 INFO L82 PathProgramCache]: Analyzing trace with hash -492056241, now seen corresponding path program 1 times [2020-10-13 13:37:14,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:14,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877462843] [2020-10-13 13:37:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:14,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:19,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:37:19,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:37:19,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:37:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:37:19,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:19,408 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:19,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:19,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:19,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:19,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:19,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:19,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:19,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:37:19,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:19,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:19,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:19,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:19,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:37:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:19,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:19,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:19,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:19,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:19,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:37:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:19,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:19,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:19,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:19,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:19,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:37:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:19,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:19,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:19,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:19,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:19,718 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 13:37:19,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877462843] [2020-10-13 13:37:19,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:19,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:19,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343034354] [2020-10-13 13:37:19,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:19,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:19,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:19,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:19,725 INFO L87 Difference]: Start difference. First operand 3544 states and 5437 transitions. Second operand 9 states. [2020-10-13 13:37:19,951 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:20,236 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:37:20,469 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 13:37:21,101 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2020-10-13 13:37:21,626 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:24,446 INFO L93 Difference]: Finished difference Result 12207 states and 19001 transitions. [2020-10-13 13:37:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:37:24,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-13 13:37:24,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:24,500 INFO L225 Difference]: With dead ends: 12207 [2020-10-13 13:37:24,501 INFO L226 Difference]: Without dead ends: 8694 [2020-10-13 13:37:24,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:37:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8694 states. [2020-10-13 13:37:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8694 to 7723. [2020-10-13 13:37:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7723 states. [2020-10-13 13:37:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 11682 transitions. [2020-10-13 13:37:25,061 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 11682 transitions. Word has length 101 [2020-10-13 13:37:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:25,062 INFO L479 AbstractCegarLoop]: Abstraction has 7723 states and 11682 transitions. [2020-10-13 13:37:25,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 11682 transitions. [2020-10-13 13:37:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:37:25,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:25,069 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, 1, 1, 1] [2020-10-13 13:37:25,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:37:25,070 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:25,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1141567773, now seen corresponding path program 1 times [2020-10-13 13:37:25,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:25,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144836556] [2020-10-13 13:37:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:25,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:25,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:37:30,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:37:30,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:37:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:37:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:30,326 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:30,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:30,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:30,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:30,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:37:30,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:30,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:30,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:37:30,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:30,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:30,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:30,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:37:30,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:37:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:37:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:30,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:30,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:30,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:30,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:30,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:30,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:30,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:30,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:37:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:30,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:30,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:30,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:30,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:30,618 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 13:37:30,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144836556] [2020-10-13 13:37:30,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:30,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:30,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687513943] [2020-10-13 13:37:30,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:30,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:30,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:30,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:30,622 INFO L87 Difference]: Start difference. First operand 7723 states and 11682 transitions. Second operand 9 states. [2020-10-13 13:37:31,090 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:33,071 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:33,680 INFO L93 Difference]: Finished difference Result 20030 states and 30605 transitions. [2020-10-13 13:37:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:37:33,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-13 13:37:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:33,752 INFO L225 Difference]: With dead ends: 20030 [2020-10-13 13:37:33,752 INFO L226 Difference]: Without dead ends: 13224 [2020-10-13 13:37:33,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13224 states. [2020-10-13 13:37:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13224 to 11407. [2020-10-13 13:37:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11407 states. [2020-10-13 13:37:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11407 states to 11407 states and 17226 transitions. [2020-10-13 13:37:34,636 INFO L78 Accepts]: Start accepts. Automaton has 11407 states and 17226 transitions. Word has length 102 [2020-10-13 13:37:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:34,636 INFO L479 AbstractCegarLoop]: Abstraction has 11407 states and 17226 transitions. [2020-10-13 13:37:34,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 11407 states and 17226 transitions. [2020-10-13 13:37:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:37:34,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:34,643 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, 1, 1, 1] [2020-10-13 13:37:34,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:37:34,643 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash -307624037, now seen corresponding path program 1 times [2020-10-13 13:37:34,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:34,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246199369] [2020-10-13 13:37:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:34,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:34,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:34,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:38,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:37:39,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:37:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:37:39,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:37:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:39,823 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:39,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:39,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:39,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:39,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:39,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:39,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:37:39,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:37:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 13:37:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:37:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:39,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:37:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:39,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:39,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:37:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:37:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:39,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:39,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:39,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:39,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:39,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:40,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:40,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:40,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:40,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:40,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:40,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:40,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:40,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:40,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:40,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:37:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:40,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:40,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:40,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:40,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:40,070 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 13:37:40,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246199369] [2020-10-13 13:37:40,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:40,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:37:40,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140633554] [2020-10-13 13:37:40,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:37:40,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:40,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:37:40,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:37:40,073 INFO L87 Difference]: Start difference. First operand 11407 states and 17226 transitions. Second operand 7 states. [2020-10-13 13:37:40,263 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:42,446 INFO L93 Difference]: Finished difference Result 24093 states and 36408 transitions. [2020-10-13 13:37:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:37:42,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-13 13:37:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:42,502 INFO L225 Difference]: With dead ends: 24093 [2020-10-13 13:37:42,502 INFO L226 Difference]: Without dead ends: 12720 [2020-10-13 13:37:42,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:37:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12720 states. [2020-10-13 13:37:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12720 to 11409. [2020-10-13 13:37:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11409 states. [2020-10-13 13:37:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11409 states to 11409 states and 17228 transitions. [2020-10-13 13:37:43,151 INFO L78 Accepts]: Start accepts. Automaton has 11409 states and 17228 transitions. Word has length 102 [2020-10-13 13:37:43,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:43,152 INFO L479 AbstractCegarLoop]: Abstraction has 11409 states and 17228 transitions. [2020-10-13 13:37:43,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:37:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 11409 states and 17228 transitions. [2020-10-13 13:37:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:37:43,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:43,159 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, 1, 1, 1, 1] [2020-10-13 13:37:43,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:37:43,159 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:43,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2050140987, now seen corresponding path program 1 times [2020-10-13 13:37:43,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:43,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934919754] [2020-10-13 13:37:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:44,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:48,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:37:48,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:37:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:37:48,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:37:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:37:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:48,352 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:48,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:48,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:48,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:37:48,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:37:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:37:48,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:37:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:48,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:37:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:48,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:48,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:48,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:37:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:48,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:37:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:48,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:48,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:48,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:37:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:48,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:48,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:48,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:37:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:37:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:48,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:48,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:48,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:48,627 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 13:37:48,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934919754] [2020-10-13 13:37:48,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:48,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:37:48,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270915294] [2020-10-13 13:37:48,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:37:48,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:48,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:37:48,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:37:48,629 INFO L87 Difference]: Start difference. First operand 11409 states and 17228 transitions. Second operand 8 states. [2020-10-13 13:37:48,853 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:49,042 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-13 13:37:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:50,589 INFO L93 Difference]: Finished difference Result 23975 states and 36277 transitions. [2020-10-13 13:37:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:37:50,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-13 13:37:50,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:50,635 INFO L225 Difference]: With dead ends: 23975 [2020-10-13 13:37:50,636 INFO L226 Difference]: Without dead ends: 12586 [2020-10-13 13:37:50,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:37:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12586 states. [2020-10-13 13:37:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12586 to 11408. [2020-10-13 13:37:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11408 states. [2020-10-13 13:37:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11408 states to 11408 states and 17224 transitions. [2020-10-13 13:37:51,245 INFO L78 Accepts]: Start accepts. Automaton has 11408 states and 17224 transitions. Word has length 103 [2020-10-13 13:37:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:51,246 INFO L479 AbstractCegarLoop]: Abstraction has 11408 states and 17224 transitions. [2020-10-13 13:37:51,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:37:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11408 states and 17224 transitions. [2020-10-13 13:37:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:37:51,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:51,253 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, 1, 1, 1, 1] [2020-10-13 13:37:51,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:37:51,253 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:51,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:51,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1466447852, now seen corresponding path program 1 times [2020-10-13 13:37:51,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:51,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50355033] [2020-10-13 13:37:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:37:56,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:37:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:37:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:37:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:37:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 13:37:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,459 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:56,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:56,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:37:56,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:37:56,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:37:56,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:37:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:56,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:56,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:37:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:56,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:56,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:37:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:56,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:37:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:56,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:56,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:37:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:56,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:56,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:37:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,751 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 13:37:56,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50355033] [2020-10-13 13:37:56,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:56,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:37:56,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979348716] [2020-10-13 13:37:56,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:37:56,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:56,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:37:56,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:37:56,753 INFO L87 Difference]: Start difference. First operand 11408 states and 17224 transitions. Second operand 14 states. [2020-10-13 13:37:56,976 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:57,490 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:57,665 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:57,839 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:59,101 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-13 13:37:59,930 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:38:00,124 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 13:38:00,334 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:00,592 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:38:03,660 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:38:04,412 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:08,816 INFO L93 Difference]: Finished difference Result 49423 states and 76279 transitions. [2020-10-13 13:38:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 13:38:08,818 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 103 [2020-10-13 13:38:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:08,994 INFO L225 Difference]: With dead ends: 49423 [2020-10-13 13:38:08,995 INFO L226 Difference]: Without dead ends: 38196 [2020-10-13 13:38:09,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692 [2020-10-13 13:38:09,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38196 states. [2020-10-13 13:38:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38196 to 33777. [2020-10-13 13:38:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33777 states. [2020-10-13 13:38:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33777 states to 33777 states and 52034 transitions. [2020-10-13 13:38:11,163 INFO L78 Accepts]: Start accepts. Automaton has 33777 states and 52034 transitions. Word has length 103 [2020-10-13 13:38:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:11,163 INFO L479 AbstractCegarLoop]: Abstraction has 33777 states and 52034 transitions. [2020-10-13 13:38:11,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:38:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 33777 states and 52034 transitions. [2020-10-13 13:38:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:38:11,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:11,170 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, 1, 1, 1, 1, 1] [2020-10-13 13:38:11,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:38:11,170 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:11,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1891601092, now seen corresponding path program 1 times [2020-10-13 13:38:11,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:11,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164058497] [2020-10-13 13:38:11,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:16,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:16,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:38:16,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:38:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:38:16,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:38:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:38:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:16,376 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:16,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:16,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:16,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:16,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:16,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:16,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:16,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:16,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:16,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:16,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:16,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:16,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:38:16,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:38:16,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:16,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:16,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:16,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:16,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:16,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:16,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:16,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:16,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:38:16,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:38:16,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:38:16,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:38:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:16,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:16,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:16,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:16,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:16,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:16,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:38:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:16,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:16,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:16,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:16,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:16,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:16,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:16,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:16,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:16,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:16,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:38:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:16,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:16,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:16,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:16,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:16,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:16,589 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 13:38:16,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164058497] [2020-10-13 13:38:16,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:16,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:16,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282432204] [2020-10-13 13:38:16,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:16,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:16,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:16,591 INFO L87 Difference]: Start difference. First operand 33777 states and 52034 transitions. Second operand 9 states. [2020-10-13 13:38:16,775 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:18,183 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:38:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:20,568 INFO L93 Difference]: Finished difference Result 74540 states and 115683 transitions. [2020-10-13 13:38:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:38:20,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-13 13:38:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:20,734 INFO L225 Difference]: With dead ends: 74540 [2020-10-13 13:38:20,735 INFO L226 Difference]: Without dead ends: 45620 [2020-10-13 13:38:20,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:38:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45620 states. [2020-10-13 13:38:24,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45620 to 40923. [2020-10-13 13:38:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40923 states. [2020-10-13 13:38:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40923 states to 40923 states and 62871 transitions. [2020-10-13 13:38:24,162 INFO L78 Accepts]: Start accepts. Automaton has 40923 states and 62871 transitions. Word has length 104 [2020-10-13 13:38:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:24,163 INFO L479 AbstractCegarLoop]: Abstraction has 40923 states and 62871 transitions. [2020-10-13 13:38:24,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:38:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40923 states and 62871 transitions. [2020-10-13 13:38:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:38:24,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:24,166 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, 1, 1, 1, 1, 1] [2020-10-13 13:38:24,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:38:24,166 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:24,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:24,166 INFO L82 PathProgramCache]: Analyzing trace with hash 958335964, now seen corresponding path program 1 times [2020-10-13 13:38:24,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:24,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263656713] [2020-10-13 13:38:24,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:26,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:38:29,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:38:29,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:38:29,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:38:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:38:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:38:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,362 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:29,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:29,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:38:29,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:29,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:38:29,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:29,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:29,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:29,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:29,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:29,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:29,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:38:29,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:29,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:29,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:29,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:38:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:29,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:29,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:29,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:38:29,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:29,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:38:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:38:29,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263656713] [2020-10-13 13:38:29,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:29,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:38:29,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201942933] [2020-10-13 13:38:29,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:38:29,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:29,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:38:29,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:38:29,593 INFO L87 Difference]: Start difference. First operand 40923 states and 62871 transitions. Second operand 10 states. [2020-10-13 13:38:29,771 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:30,202 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:31,713 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:31,892 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:37,153 INFO L93 Difference]: Finished difference Result 140294 states and 216829 transitions. [2020-10-13 13:38:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:38:37,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-13 13:38:37,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:37,523 INFO L225 Difference]: With dead ends: 140294 [2020-10-13 13:38:37,523 INFO L226 Difference]: Without dead ends: 99741 [2020-10-13 13:38:37,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:38:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99741 states. [2020-10-13 13:38:41,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99741 to 87858. [2020-10-13 13:38:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87858 states. [2020-10-13 13:38:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87858 states to 87858 states and 135230 transitions. [2020-10-13 13:38:41,301 INFO L78 Accepts]: Start accepts. Automaton has 87858 states and 135230 transitions. Word has length 104 [2020-10-13 13:38:41,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:41,302 INFO L479 AbstractCegarLoop]: Abstraction has 87858 states and 135230 transitions. [2020-10-13 13:38:41,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:38:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 87858 states and 135230 transitions. [2020-10-13 13:38:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:38:41,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:41,305 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, 1, 1, 1, 1, 1, 1] [2020-10-13 13:38:41,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:38:41,306 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1234462005, now seen corresponding path program 1 times [2020-10-13 13:38:41,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:41,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536582475] [2020-10-13 13:38:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:45,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:38:46,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:38:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:38:46,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:38:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:38:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:38:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,504 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:46,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:46,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:46,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:38:46,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:38:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:46,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:46,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:46,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:46,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:46,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:46,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:46,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:38:46,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:38:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:46,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:46,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:38:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,741 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 13:38:46,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536582475] [2020-10-13 13:38:46,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:46,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:38:46,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936311285] [2020-10-13 13:38:46,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:38:46,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:46,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:38:46,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:38:46,743 INFO L87 Difference]: Start difference. First operand 87858 states and 135230 transitions. Second operand 10 states. [2020-10-13 13:38:46,939 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:47,375 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:48,532 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:48,696 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:59,815 INFO L93 Difference]: Finished difference Result 352961 states and 547822 transitions. [2020-10-13 13:38:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:38:59,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-10-13 13:38:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:00,514 INFO L225 Difference]: With dead ends: 352961 [2020-10-13 13:39:00,514 INFO L226 Difference]: Without dead ends: 265533 [2020-10-13 13:39:00,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:39:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265533 states. [2020-10-13 13:39:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265533 to 229168. [2020-10-13 13:39:11,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229168 states. [2020-10-13 13:39:12,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229168 states to 229168 states and 354632 transitions. [2020-10-13 13:39:12,119 INFO L78 Accepts]: Start accepts. Automaton has 229168 states and 354632 transitions. Word has length 105 [2020-10-13 13:39:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:12,119 INFO L479 AbstractCegarLoop]: Abstraction has 229168 states and 354632 transitions. [2020-10-13 13:39:12,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:39:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 229168 states and 354632 transitions. [2020-10-13 13:39:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:39:12,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:12,122 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:39:12,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:39:12,122 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:12,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1055296855, now seen corresponding path program 1 times [2020-10-13 13:39:12,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:12,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849312677] [2020-10-13 13:39:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:39:18,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:39:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6388 [2020-10-13 13:39:18,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 13:39:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:39:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,708 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:18,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:18,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:18,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:18,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:39:18,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:39:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:18,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:18,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:18,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:18,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:18,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:18,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:39:18,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:39:18,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:39:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:39:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:39:18,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:18,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:39:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,911 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 13:39:18,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849312677] [2020-10-13 13:39:18,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:18,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:18,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143552323] [2020-10-13 13:39:18,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:18,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:18,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:18,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:18,913 INFO L87 Difference]: Start difference. First operand 229168 states and 354632 transitions. Second operand 9 states. [2020-10-13 13:39:19,102 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:20,769 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:39:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:37,751 INFO L93 Difference]: Finished difference Result 604617 states and 938251 transitions. [2020-10-13 13:39:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:39:37,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 13:39:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:38,809 INFO L225 Difference]: With dead ends: 604617 [2020-10-13 13:39:38,809 INFO L226 Difference]: Without dead ends: 404467 [2020-10-13 13:39:39,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:39:39,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404467 states.