/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=BIGGEST --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.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:01:14,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:01:14,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:01:14,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:01:14,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:01:14,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:01:14,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:01:14,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:01:14,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:01:14,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:01:14,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:01:14,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:01:14,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:01:14,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:01:14,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:01:14,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:01:14,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:01:14,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:01:14,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:01:14,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:01:14,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:01:14,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:01:14,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:01:14,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:01:14,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:01:14,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:01:14,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:01:14,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:01:14,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:01:14,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:01:14,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:01:14,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:01:14,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:01:14,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:01:14,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:01:14,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:01:14,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:01:14,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:01:14,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:01:14,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:01:14,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:01:14,568 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 [2020-10-12 19:01:14,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:01:14,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:01:14,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:01:14,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:01:14,613 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:01:14,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:01:14,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:01:14,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:01:14,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:01:14,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:01:14,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:01:14,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:01:14,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:01:14,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:01:14,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:01:14,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:01:14,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:01:14,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:01:14,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:01:14,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:01:14,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:01:14,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:01:14,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:01:14,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:01:14,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:01:14,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:01:14,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:01:14,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:01:14,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:01:14,619 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:01:14,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:01:14,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:01:14,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:01:14,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:01:14,972 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:01:14,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-12 19:01:15,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc1afeff4/e36bfd4a38e847c0b615ab506da376a6/FLAGbe3628118 [2020-10-12 19:01:15,626 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:01:15,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-12 19:01:15,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc1afeff4/e36bfd4a38e847c0b615ab506da376a6/FLAGbe3628118 [2020-10-12 19:01:15,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc1afeff4/e36bfd4a38e847c0b615ab506da376a6 [2020-10-12 19:01:15,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:01:15,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:01:15,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:01:15,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:01:15,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:01:15,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:01:15" (1/1) ... [2020-10-12 19:01:15,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710186eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:15, skipping insertion in model container [2020-10-12 19:01:15,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:01:15" (1/1) ... [2020-10-12 19:01:15,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:01:15,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:01:16,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:01:16,565 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:01:16,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:01:16,752 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:01:16,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16 WrapperNode [2020-10-12 19:01:16,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:01:16,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:01:16,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:01:16,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:01:16,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (1/1) ... [2020-10-12 19:01:16,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (1/1) ... [2020-10-12 19:01:16,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (1/1) ... [2020-10-12 19:01:16,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (1/1) ... [2020-10-12 19:01:16,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (1/1) ... [2020-10-12 19:01:16,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (1/1) ... [2020-10-12 19:01:16,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (1/1) ... [2020-10-12 19:01:16,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:01:16,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:01:16,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:01:16,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:01:16,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (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 [2020-10-12 19:01:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:01:16,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:01:16,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:01:16,992 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-12 19:01:16,992 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-12 19:01:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-12 19:01:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-12 19:01:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-12 19:01:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-12 19:01:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 19:01:16,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:01:16,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-12 19:01:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:01:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:01:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:01:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:01:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:01:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:01:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:01:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:01:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:01:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:01:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:01:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:01:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:01:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:01:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:01:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:01:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:01:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:01:19,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:01:19,245 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 19:01:19,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:01:19 BoogieIcfgContainer [2020-10-12 19:01:19,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:01:19,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:01:19,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:01:19,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:01:19,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:01:15" (1/3) ... [2020-10-12 19:01:19,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7b2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:01:19, skipping insertion in model container [2020-10-12 19:01:19,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:01:16" (2/3) ... [2020-10-12 19:01:19,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7b2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:01:19, skipping insertion in model container [2020-10-12 19:01:19,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:01:19" (3/3) ... [2020-10-12 19:01:19,270 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-12 19:01:19,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:01:19,292 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:01:19,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:01:19,330 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:01:19,330 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:01:19,331 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:01:19,331 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:01:19,331 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:01:19,331 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:01:19,331 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:01:19,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:01:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states. [2020-10-12 19:01:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-12 19:01:19,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:01:19,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:01:19,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:01:19,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:01:19,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1964386708, now seen corresponding path program 1 times [2020-10-12 19:01:19,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:01:19,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731924245] [2020-10-12 19:01:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:01:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:20,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:20,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 19:01:20,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-12 19:01:20,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-12 19:01:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:01:22,020 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:01:22,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:01:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:01:22,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 19:01:22,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:01:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:01:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 19:01:22,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-12 19:01:22,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:01:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 19:01:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:01:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:01:22,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 19:01:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:22,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-12 19:01:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:22,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:01:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 19:01:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:22,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:01:22,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-12 19:01:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:22,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:01:22,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:22,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 19:01:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:01:22,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:22,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-12 19:01:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:22,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:01:22,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:22,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-12 19:01:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:22,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:22,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:01:22,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:01:22,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:01:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:01:22,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731924245] [2020-10-12 19:01:22,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:01:22,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:01:22,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842020292] [2020-10-12 19:01:22,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:01:22,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:01:22,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:01:22,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:01:22,921 INFO L87 Difference]: Start difference. First operand 773 states. Second operand 8 states. [2020-10-12 19:01:25,773 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:26,372 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:27,097 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:27,802 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:28,558 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:01:29,624 INFO L93 Difference]: Finished difference Result 1051 states and 1855 transitions. [2020-10-12 19:01:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:01:29,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-12 19:01:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:01:29,655 INFO L225 Difference]: With dead ends: 1051 [2020-10-12 19:01:29,656 INFO L226 Difference]: Without dead ends: 833 [2020-10-12 19:01:29,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:01:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-12 19:01:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 768. [2020-10-12 19:01:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-10-12 19:01:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1387 transitions. [2020-10-12 19:01:29,860 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1387 transitions. Word has length 187 [2020-10-12 19:01:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:01:29,861 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 1387 transitions. [2020-10-12 19:01:29,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:01:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1387 transitions. [2020-10-12 19:01:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-12 19:01:29,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:01:29,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:01:29,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:01:29,867 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:01:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:01:29,868 INFO L82 PathProgramCache]: Analyzing trace with hash -792240558, now seen corresponding path program 1 times [2020-10-12 19:01:29,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:01:29,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187342502] [2020-10-12 19:01:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:01:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:30,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:32,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 19:01:32,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-10-12 19:01:32,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:01:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-12 19:01:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 19:01:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:33,428 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:01:33,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:01:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:33,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:33,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:01:33,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:01:33,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:01:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:33,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:33,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:01:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:34,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:34,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 19:01:34,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:34,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-12 19:01:34,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:34,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:01:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:01:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 19:01:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 19:01:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:34,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:34,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:01:34,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:01:34,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:01:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 19:01:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:01:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:01:34,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-12 19:01:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:34,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:34,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:01:34,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 19:01:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:34,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:34,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:34,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:01:34,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-12 19:01:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:34,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:34,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:34,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:01:34,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:34,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 19:01:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:34,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:34,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:34,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:01:34,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:34,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-12 19:01:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:34,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:34,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:34,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:34,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:01:34,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:34,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:34,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-12 19:01:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:34,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:34,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:01:34,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:01:34,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:01:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:01:34,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187342502] [2020-10-12 19:01:34,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:01:34,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:01:34,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793382597] [2020-10-12 19:01:34,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:01:34,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:01:34,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:01:34,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:01:34,655 INFO L87 Difference]: Start difference. First operand 768 states and 1387 transitions. Second operand 14 states. [2020-10-12 19:01:42,537 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:01:43,251 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-12 19:01:44,085 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-12 19:01:44,791 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:01:46,046 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:46,800 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:47,680 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:48,579 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:49,475 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:01:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:01:50,902 INFO L93 Difference]: Finished difference Result 1055 states and 1861 transitions. [2020-10-12 19:01:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 19:01:50,903 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 187 [2020-10-12 19:01:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:01:50,911 INFO L225 Difference]: With dead ends: 1055 [2020-10-12 19:01:50,912 INFO L226 Difference]: Without dead ends: 844 [2020-10-12 19:01:50,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:01:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-12 19:01:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 768. [2020-10-12 19:01:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-10-12 19:01:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1322 transitions. [2020-10-12 19:01:51,087 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1322 transitions. Word has length 187 [2020-10-12 19:01:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:01:51,088 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 1322 transitions. [2020-10-12 19:01:51,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:01:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1322 transitions. [2020-10-12 19:01:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-12 19:01:51,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:01:51,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:01:51,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:01:51,094 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:01:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:01:51,095 INFO L82 PathProgramCache]: Analyzing trace with hash 791940016, now seen corresponding path program 1 times [2020-10-12 19:01:51,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:01:51,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297464202] [2020-10-12 19:01:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:01:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:56,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:56,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 19:01:56,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:01:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:01:56,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:56,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:01:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-12 19:01:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:01:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:57,230 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:01:57,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:01:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:57,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:57,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:01:57,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:57,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 19:01:57,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:01:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:57,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:01:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:57,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:01:57,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-12 19:01:57,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:01:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:01:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 19:01:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:01:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:57,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:57,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:01:57,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:01:57,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:01:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:01:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:01:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:57,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:01:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:57,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:57,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:57,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:01:57,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:01:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:01:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:01:57,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:57,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-12 19:01:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:57,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:57,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:57,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:58,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:01:58,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 19:01:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:58,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:58,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:58,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:58,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:01:58,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:58,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-12 19:01:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:58,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:58,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:58,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:58,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:58,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:01:58,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-12 19:01:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:58,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:58,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:58,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:01:58,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:01:58,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:01:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:01:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-12 19:01:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:01:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:01:58,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:01:58,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:01:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:01:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:01:58,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:01:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:01:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:01:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:01:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:01:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:01:58,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297464202] [2020-10-12 19:01:58,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:01:58,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:01:58,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523437688] [2020-10-12 19:01:58,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:01:58,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:01:58,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:01:58,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:01:58,292 INFO L87 Difference]: Start difference. First operand 768 states and 1322 transitions. Second operand 11 states. [2020-10-12 19:01:58,934 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:02:04,537 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:04,981 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:02:05,457 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:05,667 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:06,441 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:06,715 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:07,653 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:08,002 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:08,809 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:09,064 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:10,628 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:02:11,181 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:02:11,529 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:02:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:02:11,577 INFO L93 Difference]: Finished difference Result 1305 states and 2212 transitions. [2020-10-12 19:02:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:02:11,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2020-10-12 19:02:11,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:02:11,595 INFO L225 Difference]: With dead ends: 1305 [2020-10-12 19:02:11,595 INFO L226 Difference]: Without dead ends: 1100 [2020-10-12 19:02:11,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:02:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-10-12 19:02:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 962. [2020-10-12 19:02:11,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-12 19:02:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1635 transitions. [2020-10-12 19:02:11,747 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1635 transitions. Word has length 251 [2020-10-12 19:02:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:02:11,749 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1635 transitions. [2020-10-12 19:02:11,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:02:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1635 transitions. [2020-10-12 19:02:11,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-12 19:02:11,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:02:11,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:02:11,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:02:11,756 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:02:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:02:11,756 INFO L82 PathProgramCache]: Analyzing trace with hash -740083496, now seen corresponding path program 1 times [2020-10-12 19:02:11,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:02:11,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996668231] [2020-10-12 19:02:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:02:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:16,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:16,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-12 19:02:16,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:02:16,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:02:16,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:02:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-12 19:02:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 19:02:16,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:17,814 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:02:17,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:02:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:17,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:17,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:02:17,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:17,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:02:17,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:02:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:02:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:02:17,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:02:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:18,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:18,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:02:18,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:18,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-12 19:02:18,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:02:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 19:02:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:02:18,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:02:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:02:18,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:02:18,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:02:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:02:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:02:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:02:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:18,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:18,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:02:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:02:18,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:02:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:02:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:02:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-12 19:02:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:18,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:18,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:02:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:02:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:02:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:02:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:02:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-12 19:02:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:18,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:18,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:02:18,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:18,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:02:18,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:02:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:02:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:02:18,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:18,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-12 19:02:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:18,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:18,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:02:18,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:02:18,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:02:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:02:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:02:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-12 19:02:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:18,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:18,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:02:18,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:18,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:02:18,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:02:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:02:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:02:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-12 19:02:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:18,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:18,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:18,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:02:18,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:18,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:02:18,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:18,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:02:18,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:02:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:02:18,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:02:18,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996668231] [2020-10-12 19:02:18,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:02:18,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:02:18,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756972223] [2020-10-12 19:02:18,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:02:18,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:02:18,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:02:18,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:02:18,947 INFO L87 Difference]: Start difference. First operand 962 states and 1635 transitions. Second operand 11 states. [2020-10-12 19:02:19,626 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:02:25,587 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:26,287 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:26,816 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:02:27,409 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:27,645 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:28,439 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:28,705 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:29,582 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:29,917 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:31,505 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:32,391 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:02:32,620 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:02:32,919 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:02:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:02:32,987 INFO L93 Difference]: Finished difference Result 2006 states and 3349 transitions. [2020-10-12 19:02:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:02:32,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 255 [2020-10-12 19:02:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:02:33,001 INFO L225 Difference]: With dead ends: 2006 [2020-10-12 19:02:33,001 INFO L226 Difference]: Without dead ends: 1607 [2020-10-12 19:02:33,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:02:33,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-10-12 19:02:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1339. [2020-10-12 19:02:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-10-12 19:02:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2246 transitions. [2020-10-12 19:02:33,145 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2246 transitions. Word has length 255 [2020-10-12 19:02:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:02:33,145 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 2246 transitions. [2020-10-12 19:02:33,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:02:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2246 transitions. [2020-10-12 19:02:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-12 19:02:33,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:02:33,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:02:33,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:02:33,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:02:33,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:02:33,152 INFO L82 PathProgramCache]: Analyzing trace with hash 226952432, now seen corresponding path program 1 times [2020-10-12 19:02:33,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:02:33,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134256986] [2020-10-12 19:02:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:02:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:33,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:34,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:34,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:38,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:38,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-12 19:02:38,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:02:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 19:02:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:02:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-12 19:02:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 19:02:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,093 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:02:39,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:02:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:02:39,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:02:39,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:02:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:02:39,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:02:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:02:39,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-12 19:02:39,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:02:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 19:02:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:02:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:02:39,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:02:39,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:02:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:02:39,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:02:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:02:39,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:02:39,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:02:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:02:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-12 19:02:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:02:39,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:02:39,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:02:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:02:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-12 19:02:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:02:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:02:39,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:02:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:02:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 19:02:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-12 19:02:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:02:39,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:02:39,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:02:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:02:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:02:39,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-12 19:02:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:02:39,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:02:39,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:02:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:02:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:02:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-12 19:02:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:02:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:02:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:02:39,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:02:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:02:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:02:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:02:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:02:39,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134256986] [2020-10-12 19:02:39,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:02:39,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:02:39,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962342532] [2020-10-12 19:02:39,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:02:39,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:02:39,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:02:39,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:02:39,956 INFO L87 Difference]: Start difference. First operand 1339 states and 2246 transitions. Second operand 11 states. [2020-10-12 19:02:40,666 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:02:46,744 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:47,442 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:48,143 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:48,716 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:49,297 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:02:49,822 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:02:50,042 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:51,538 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:52,043 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:52,546 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:02:53,489 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:02:53,726 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:02:54,073 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:02:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:02:54,120 INFO L93 Difference]: Finished difference Result 3383 states and 5592 transitions. [2020-10-12 19:02:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:02:54,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 259 [2020-10-12 19:02:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:02:54,137 INFO L225 Difference]: With dead ends: 3383 [2020-10-12 19:02:54,137 INFO L226 Difference]: Without dead ends: 2607 [2020-10-12 19:02:54,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:02:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2020-10-12 19:02:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2073. [2020-10-12 19:02:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-10-12 19:02:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3428 transitions. [2020-10-12 19:02:54,404 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3428 transitions. Word has length 259 [2020-10-12 19:02:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:02:54,405 INFO L479 AbstractCegarLoop]: Abstraction has 2073 states and 3428 transitions. [2020-10-12 19:02:54,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:02:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3428 transitions. [2020-10-12 19:02:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-12 19:02:54,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:02:54,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:02:54,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:02:54,412 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:02:54,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:02:54,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1320918776, now seen corresponding path program 1 times [2020-10-12 19:02:54,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:02:54,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083901885] [2020-10-12 19:02:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:02:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:02:54,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:02:59,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:02:59,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 19:02:59,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:02:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-12 19:02:59,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:02:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:02:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-12 19:02:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 19:02:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,276 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:03:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:03:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:03:00,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:03:00,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:03:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:03:00,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 19:03:00,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 19:03:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:03:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:03:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:03:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:03:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:03:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:00,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:03:00,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:03:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-12 19:03:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:00,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:03:00,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:03:00,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-12 19:03:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:00,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:03:00,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:03:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-12 19:03:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:00,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:03:00,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:03:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-12 19:03:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:00,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:03:00,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 19:03:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-12 19:03:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:00,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:00,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:03:00,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:00,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:03:00,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:03:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:03:01,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083901885] [2020-10-12 19:03:01,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:03:01,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:03:01,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021357134] [2020-10-12 19:03:01,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:03:01,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:03:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:03:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:03:01,005 INFO L87 Difference]: Start difference. First operand 2073 states and 3428 transitions. Second operand 11 states. [2020-10-12 19:03:01,756 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:03:07,551 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:08,222 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:08,766 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:09,166 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:03:09,554 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:09,762 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:10,545 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:10,761 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:12,069 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:12,521 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:13,448 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:03:13,675 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:03:13,991 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:03:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:03:14,054 INFO L93 Difference]: Finished difference Result 6077 states and 9958 transitions. [2020-10-12 19:03:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:03:14,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 263 [2020-10-12 19:03:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:03:14,090 INFO L225 Difference]: With dead ends: 6077 [2020-10-12 19:03:14,090 INFO L226 Difference]: Without dead ends: 4567 [2020-10-12 19:03:14,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:03:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2020-10-12 19:03:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 3501. [2020-10-12 19:03:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3501 states. [2020-10-12 19:03:14,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 5712 transitions. [2020-10-12 19:03:14,458 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 5712 transitions. Word has length 263 [2020-10-12 19:03:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:03:14,459 INFO L479 AbstractCegarLoop]: Abstraction has 3501 states and 5712 transitions. [2020-10-12 19:03:14,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:03:14,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 5712 transitions. [2020-10-12 19:03:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-12 19:03:14,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:03:14,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:03:14,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:03:14,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:03:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:03:14,469 INFO L82 PathProgramCache]: Analyzing trace with hash 667307056, now seen corresponding path program 1 times [2020-10-12 19:03:14,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:03:14,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193485255] [2020-10-12 19:03:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:03:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:14,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:14,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:15,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:15,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:19,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:19,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-12 19:03:19,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:03:19,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:03:19,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 19:03:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 19:03:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,302 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:03:20,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:03:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:03:20,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:03:20,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:03:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:03:20,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 19:03:20,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 19:03:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:03:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:03:20,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 19:03:20,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:03:20,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:03:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:20,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:03:20,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:03:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-12 19:03:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:20,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:03:20,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:03:20,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-12 19:03:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:20,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:03:20,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:03:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-12 19:03:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:20,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:03:20,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:20,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:20,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:03:20,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-12 19:03:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:03:20,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:03:20,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 19:03:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-12 19:03:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:20,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:20,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:03:20,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 19:03:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 19:03:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:03:20,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193485255] [2020-10-12 19:03:20,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:03:20,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:03:20,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220394956] [2020-10-12 19:03:20,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:03:20,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:03:20,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:03:20,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:03:20,944 INFO L87 Difference]: Start difference. First operand 3501 states and 5712 transitions. Second operand 11 states. [2020-10-12 19:03:21,590 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:03:27,672 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:28,391 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:29,094 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:29,802 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:30,523 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:30,966 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:03:32,113 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:32,639 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:33,199 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:33,711 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:34,686 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:03:34,930 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:03:35,285 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:03:35,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:03:35,339 INFO L93 Difference]: Finished difference Result 11345 states and 18450 transitions. [2020-10-12 19:03:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:03:35,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 267 [2020-10-12 19:03:35,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:03:35,379 INFO L225 Difference]: With dead ends: 11345 [2020-10-12 19:03:35,380 INFO L226 Difference]: Without dead ends: 8407 [2020-10-12 19:03:35,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:03:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8407 states. [2020-10-12 19:03:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8407 to 6277. [2020-10-12 19:03:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6277 states. [2020-10-12 19:03:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6277 states to 6277 states and 10120 transitions. [2020-10-12 19:03:35,915 INFO L78 Accepts]: Start accepts. Automaton has 6277 states and 10120 transitions. Word has length 267 [2020-10-12 19:03:35,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:03:35,916 INFO L479 AbstractCegarLoop]: Abstraction has 6277 states and 10120 transitions. [2020-10-12 19:03:35,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:03:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 6277 states and 10120 transitions. [2020-10-12 19:03:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-12 19:03:35,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:03:35,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:03:35,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:03:35,924 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:03:35,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:03:35,925 INFO L82 PathProgramCache]: Analyzing trace with hash 788083416, now seen corresponding path program 1 times [2020-10-12 19:03:35,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:03:35,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418831434] [2020-10-12 19:03:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:03:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:36,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:37,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:41,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-12 19:03:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:03:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:03:41,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 19:03:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-12 19:03:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 19:03:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:41,814 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:03:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:03:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:41,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:41,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:41,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:03:41,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:41,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:03:41,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:03:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:03:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:03:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:41,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:42,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:42,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:03:42,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:42,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-12 19:03:42,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:03:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-12 19:03:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:03:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:42,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:42,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:03:42,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:03:42,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:42,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:42,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:03:42,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:03:42,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:42,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:03:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:03:42,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 19:03:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:03:42,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-12 19:03:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:42,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:42,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:42,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:42,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:03:42,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 19:03:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-12 19:03:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:43,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:43,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:43,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:03:43,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 19:03:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-12 19:03:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:43,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:43,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:43,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:43,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:03:43,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 19:03:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:03:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-12 19:03:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:43,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:43,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:03:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:03:43,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:03:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:03:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 19:03:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-12 19:03:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:03:43,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:03:43,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:03:43,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 19:03:43,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:03:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:03:43,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:03:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:03:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 19:03:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 19:03:43,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:03:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:03:43,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418831434] [2020-10-12 19:03:43,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:03:43,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-12 19:03:43,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028444587] [2020-10-12 19:03:43,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 19:03:43,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:03:43,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 19:03:43,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:03:43,383 INFO L87 Difference]: Start difference. First operand 6277 states and 10120 transitions. Second operand 20 states. [2020-10-12 19:03:44,147 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:03:50,515 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-12 19:03:51,168 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:03:51,832 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-12 19:03:52,545 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:03:53,005 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:03:53,524 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:53,966 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:03:54,208 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:03:54,842 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:55,224 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:55,671 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:03:55,929 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:03:56,168 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:03:56,990 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:03:57,415 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:03:57,661 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:03:58,102 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:03:58,376 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:03:58,607 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:03:58,842 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:03:59,844 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:04:00,307 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:04:00,554 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:04:00,815 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:01,289 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:01,584 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:01,826 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:04:02,071 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:02,326 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:03,741 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:04,313 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:04:04,579 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 19:04:04,863 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:05,153 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:04:06,234 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-12 19:04:06,953 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-12 19:04:07,670 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:04:08,398 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2020-10-12 19:04:09,151 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:04:11,849 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 379 DAG size of output: 377 [2020-10-12 19:04:13,560 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:13,835 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:14,096 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:14,363 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:14,648 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:04:14,907 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 19:04:15,290 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:04:15,556 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:15,824 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:16,108 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:18,377 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:18,691 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:04:19,325 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:19,605 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:19,878 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:20,158 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:04:20,685 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:04:20,945 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:21,213 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:21,501 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:22,380 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-12 19:04:24,910 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:25,310 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:25,625 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:26,247 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:04:26,535 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:26,838 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:27,502 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:27,794 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:04:28,100 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:28,798 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-12 19:04:31,586 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:32,057 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:32,353 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:32,724 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:33,116 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:33,404 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:04:33,994 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:04:34,283 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:34,888 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-12 19:04:37,337 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:04:37,700 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:04:38,043 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:38,366 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:38,726 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:04:39,100 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:04:39,678 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:04:40,404 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-12 19:04:43,381 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-12 19:04:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:04:45,634 INFO L93 Difference]: Finished difference Result 58032 states and 95206 transitions. [2020-10-12 19:04:45,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-10-12 19:04:45,635 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 271 [2020-10-12 19:04:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:04:45,843 INFO L225 Difference]: With dead ends: 58032 [2020-10-12 19:04:45,843 INFO L226 Difference]: Without dead ends: 52318 [2020-10-12 19:04:45,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4833 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=2473, Invalid=11333, Unknown=0, NotChecked=0, Total=13806 [2020-10-12 19:04:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52318 states. [2020-10-12 19:04:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52318 to 38104. [2020-10-12 19:04:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38104 states. [2020-10-12 19:04:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38104 states to 38104 states and 61642 transitions. [2020-10-12 19:04:49,300 INFO L78 Accepts]: Start accepts. Automaton has 38104 states and 61642 transitions. Word has length 271 [2020-10-12 19:04:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:04:49,301 INFO L479 AbstractCegarLoop]: Abstraction has 38104 states and 61642 transitions. [2020-10-12 19:04:49,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 19:04:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 38104 states and 61642 transitions. [2020-10-12 19:04:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-12 19:04:49,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:04:49,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:04:49,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:04:49,319 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:04:49,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:04:49,320 INFO L82 PathProgramCache]: Analyzing trace with hash 222322594, now seen corresponding path program 1 times [2020-10-12 19:04:49,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:04:49,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233095679] [2020-10-12 19:04:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:04:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:50,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:51,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:54,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:54,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-12 19:04:54,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:04:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-12 19:04:54,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:04:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-12 19:04:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 19:04:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,267 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-12 19:04:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:04:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:04:55,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:04:55,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:04:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:04:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:04:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 19:04:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 19:04:55,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-12 19:04:55,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:04:55,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:04:55,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-12 19:04:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 19:04:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 19:04:55,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:04:55,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:04:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:04:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:04:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 19:04:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:04:55,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:04:55,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:04:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 19:04:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 19:04:55,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-12 19:04:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:04:55,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:04:55,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:04:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:04:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:04:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-12 19:04:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:04:55,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:04:55,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:04:55,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:04:55,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:04:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-12 19:04:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:04:55,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:04:55,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:04:55,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:04:55,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:04:55,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-12 19:04:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 19:04:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:04:55,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:04:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:04:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 19:04:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:55,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-12 19:04:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:04:55,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:04:55,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:04:55,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 19:04:55,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:04:55,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 19:04:55,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:04:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:04:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-12 19:04:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 19:04:55,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:04:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:04:56,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233095679] [2020-10-12 19:04:56,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:04:56,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:04:56,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047542857] [2020-10-12 19:04:56,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:04:56,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:04:56,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:04:56,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:04:56,050 INFO L87 Difference]: Start difference. First operand 38104 states and 61642 transitions. Second operand 12 states. [2020-10-12 19:04:56,747 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 374