/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:25:13,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:25:13,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:25:13,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:25:13,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:25:13,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:25:13,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:25:13,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:25:13,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:25:13,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:25:13,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:25:13,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:25:13,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:25:13,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:25:13,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:25:13,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:25:13,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:25:13,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:25:13,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:25:13,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:25:13,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:25:13,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:25:13,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:25:13,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:25:13,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:25:13,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:25:13,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:25:13,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:25:13,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:25:13,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:25:13,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:25:13,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:25:13,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:25:13,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:25:13,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:25:13,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:25:13,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:25:13,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:25:13,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:25:13,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:25:13,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:25:13,869 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 [2020-10-27 04:25:13,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:25:13,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:25:13,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:25:13,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:25:13,904 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:25:13,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:25:13,904 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:25:13,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:25:13,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:25:13,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:25:13,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:25:13,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:25:13,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:25:13,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:25:13,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:25:13,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:25:13,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:25:13,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:25:13,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:25:13,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:25:13,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:25:13,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:25:13,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:25:13,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:25:13,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:25:13,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:25:13,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:25:13,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:25:13,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:25:13,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:25:14,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:25:14,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:25:14,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:25:14,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:25:14,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:25:14,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:25:14,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0df0d49f/0305a5cb3b27438fb168b3333ebc6cfa/FLAGed66e5e84 [2020-10-27 04:25:15,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:25:15,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:25:15,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0df0d49f/0305a5cb3b27438fb168b3333ebc6cfa/FLAGed66e5e84 [2020-10-27 04:25:15,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0df0d49f/0305a5cb3b27438fb168b3333ebc6cfa [2020-10-27 04:25:15,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:25:15,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:25:15,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:25:15,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:25:15,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:25:15,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:15,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75552a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15, skipping insertion in model container [2020-10-27 04:25:15,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:15,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:25:15,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:25:15,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:25:15,743 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:25:15,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:25:15,867 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:25:15,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15 WrapperNode [2020-10-27 04:25:15,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:25:15,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:25:15,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:25:15,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:25:15,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:15,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:15,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:15,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:15,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:15,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:15,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (1/1) ... [2020-10-27 04:25:16,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:25:16,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:25:16,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:25:16,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:25:16,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (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 [2020-10-27 04:25:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:25:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:25:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:25:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:25:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:25:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:25:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:25:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:25:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:25:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:25:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:25:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:25:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:25:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:25:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:25:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:25:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:25:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:25:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:25:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:25:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:25:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:25:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:25:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:25:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:25:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:25:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:25:16,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:25:16,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:25:16,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:25:16,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:25:16,958 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:25:16,958 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:25:16,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:25:16 BoogieIcfgContainer [2020-10-27 04:25:16,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:25:16,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:25:16,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:25:16,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:25:16,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:25:15" (1/3) ... [2020-10-27 04:25:16,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e33d30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:25:16, skipping insertion in model container [2020-10-27 04:25:16,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:25:15" (2/3) ... [2020-10-27 04:25:16,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e33d30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:25:16, skipping insertion in model container [2020-10-27 04:25:16,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:25:16" (3/3) ... [2020-10-27 04:25:16,986 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:25:16,998 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:25:17,002 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:25:17,015 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:25:17,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:25:17,043 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:25:17,044 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:25:17,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:25:17,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:25:17,044 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:25:17,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:25:17,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:25:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-10-27 04:25:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:25:17,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:17,074 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] [2020-10-27 04:25:17,074 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash -929668031, now seen corresponding path program 1 times [2020-10-27 04:25:17,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:17,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261626433] [2020-10-27 04:25:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:17,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:25:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-27 04:25:17,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:25:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:25:17,953 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:25:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:18,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:25:18,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:25:18,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 04:25:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:25:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:25:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:25:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:25:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:18,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:25:18,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:25:18,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:25:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:25:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:18,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:25:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:25:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:25:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:25:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:18,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:25:18,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:25:18,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261626433] [2020-10-27 04:25:18,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:18,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:25:18,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589259631] [2020-10-27 04:25:18,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:25:18,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:18,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:25:18,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:25:18,284 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 6 states. [2020-10-27 04:25:19,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:25:19,111 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2020-10-27 04:25:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:25:19,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-27 04:25:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:25:19,124 INFO L225 Difference]: With dead ends: 154 [2020-10-27 04:25:19,125 INFO L226 Difference]: Without dead ends: 85 [2020-10-27 04:25:19,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:25:19,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-27 04:25:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-27 04:25:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 04:25:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-10-27 04:25:19,184 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 50 [2020-10-27 04:25:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:25:19,185 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-10-27 04:25:19,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:25:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-10-27 04:25:19,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:25:19,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:19,188 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] [2020-10-27 04:25:19,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:25:19,188 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:19,189 INFO L82 PathProgramCache]: Analyzing trace with hash -270136509, now seen corresponding path program 1 times [2020-10-27 04:25:19,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:19,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3481813] [2020-10-27 04:25:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:19,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:19,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:25:19,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:19,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-27 04:25:19,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:25:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:25:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:25:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:20,001 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:25:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:20,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:20,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:20,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:25:20,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:20,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:20,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:20,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:20,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:25:20,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:25:20,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:20,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 04:25:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:20,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:20,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:20,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:25:20,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:25:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:25:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:20,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:20,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:20,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:20,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:20,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:25:20,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:20,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:20,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:25:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:20,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:25:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:20,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:20,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:20,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:20,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:25:20,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:20,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:20,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:25:20,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:20,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:25:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:20,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:20,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:20,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:20,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:25:20,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:20,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:20,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:25:20,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3481813] [2020-10-27 04:25:20,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:20,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:25:20,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337427784] [2020-10-27 04:25:20,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:25:20,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:20,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:25:20,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:25:20,218 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 10 states. [2020-10-27 04:25:20,421 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:25:20,563 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 04:25:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:25:21,521 INFO L93 Difference]: Finished difference Result 155 states and 216 transitions. [2020-10-27 04:25:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:25:21,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-27 04:25:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:25:21,525 INFO L225 Difference]: With dead ends: 155 [2020-10-27 04:25:21,526 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 04:25:21,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:25:21,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 04:25:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-27 04:25:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 04:25:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2020-10-27 04:25:21,573 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 50 [2020-10-27 04:25:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:25:21,573 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2020-10-27 04:25:21,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:25:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2020-10-27 04:25:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 04:25:21,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:21,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:25:21,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:25:21,581 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1818227069, now seen corresponding path program 1 times [2020-10-27 04:25:21,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:21,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307219740] [2020-10-27 04:25:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:24,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:24,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:25:24,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:25:24,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2778 [2020-10-27 04:25:24,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:25:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 04:25:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:25:24,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:25:24,575 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:25:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:24,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:24,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:24,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:25:24,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:24,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:25:24,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:25:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:25:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:25:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:24,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:24,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:24,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:24,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:25:24,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:25:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:25:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:24,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:24,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:24,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:25:24,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:25:24,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:25:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:24,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:24,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:24,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:24,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:25:24,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:25:24,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:25:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:24,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:24,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:24,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:25:24,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:25:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:25:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:25:24,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307219740] [2020-10-27 04:25:24,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:24,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:25:24,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429218300] [2020-10-27 04:25:24,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:25:24,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:24,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:25:24,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:25:24,915 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand 14 states. [2020-10-27 04:25:25,084 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:25:25,270 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:25:25,443 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:25:26,811 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 04:25:26,966 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 04:25:27,121 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:25:27,337 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 04:25:27,515 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:25:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:25:31,540 INFO L93 Difference]: Finished difference Result 637 states and 904 transitions. [2020-10-27 04:25:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 04:25:31,540 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-27 04:25:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:25:31,551 INFO L225 Difference]: With dead ends: 637 [2020-10-27 04:25:31,551 INFO L226 Difference]: Without dead ends: 582 [2020-10-27 04:25:31,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=841, Invalid=3191, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 04:25:31,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-27 04:25:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 513. [2020-10-27 04:25:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-27 04:25:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 704 transitions. [2020-10-27 04:25:31,657 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 704 transitions. Word has length 65 [2020-10-27 04:25:31,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:25:31,658 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 704 transitions. [2020-10-27 04:25:31,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:25:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 704 transitions. [2020-10-27 04:25:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 04:25:31,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:31,662 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] [2020-10-27 04:25:31,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:25:31,663 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:31,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1895405171, now seen corresponding path program 1 times [2020-10-27 04:25:31,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:31,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463043115] [2020-10-27 04:25:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:31,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:33,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:35,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:35,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 04:25:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:25:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-10-27 04:25:35,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:35,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:25:35,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:25:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 04:25:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:36,012 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:25:36,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:36,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:36,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:36,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:36,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:25:36,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:36,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:25:36,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:36,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:36,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:25:36,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:36,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:25:36,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:25:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:36,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:25:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:36,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:36,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:36,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:36,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:25:36,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:25:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:36,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:25:36,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:25:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:25:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:36,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:36,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:36,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:25:36,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:25:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:36,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:25:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:36,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:36,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:36,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:25:36,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:25:36,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:25:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:36,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:36,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:25:36,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:25:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:25:36,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:25:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:25:36,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:25:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:25:36,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463043115] [2020-10-27 04:25:36,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:36,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:25:36,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803048259] [2020-10-27 04:25:36,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:25:36,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:36,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:25:36,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:25:36,364 INFO L87 Difference]: Start difference. First operand 513 states and 704 transitions. Second operand 11 states. [2020-10-27 04:25:36,537 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:25:36,964 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:25:38,092 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:25:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:25:38,790 INFO L93 Difference]: Finished difference Result 2258 states and 3154 transitions. [2020-10-27 04:25:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:25:38,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-27 04:25:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:25:38,805 INFO L225 Difference]: With dead ends: 2258 [2020-10-27 04:25:38,805 INFO L226 Difference]: Without dead ends: 1775 [2020-10-27 04:25:38,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:25:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-10-27 04:25:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1766. [2020-10-27 04:25:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1766 states. [2020-10-27 04:25:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2415 transitions. [2020-10-27 04:25:38,994 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2415 transitions. Word has length 67 [2020-10-27 04:25:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:25:38,994 INFO L481 AbstractCegarLoop]: Abstraction has 1766 states and 2415 transitions. [2020-10-27 04:25:38,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:25:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2415 transitions. [2020-10-27 04:25:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 04:25:38,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:38,998 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] [2020-10-27 04:25:38,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:25:38,998 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:38,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:38,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1135491653, now seen corresponding path program 1 times [2020-10-27 04:25:38,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:38,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401629658] [2020-10-27 04:25:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:40,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:40,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 04:25:40,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:25:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1851 [2020-10-27 04:25:40,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:25:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 04:25:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:25:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:41,049 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:25:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:41,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:41,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:41,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:41,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:25:41,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:41,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:41,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:41,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:41,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:41,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:25:41,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:41,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:25:41,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:41,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:41,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:41,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:25:41,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:41,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:25:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:41,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:41,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:41,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:25:41,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:25:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:41,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:25:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:41,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:41,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:41,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:25:41,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:25:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:25:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:41,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:41,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:41,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:25:41,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:25:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:25:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:25:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:41,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:25:41,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:25:41,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:25:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:25:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:25:41,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401629658] [2020-10-27 04:25:41,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:41,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:25:41,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894939593] [2020-10-27 04:25:41,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:25:41,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:41,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:25:41,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:25:41,417 INFO L87 Difference]: Start difference. First operand 1766 states and 2415 transitions. Second operand 13 states. [2020-10-27 04:25:41,657 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 04:25:41,883 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:25:42,045 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:25:42,559 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 04:25:43,135 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:25:43,829 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:25:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:25:45,977 INFO L93 Difference]: Finished difference Result 3993 states and 5586 transitions. [2020-10-27 04:25:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 04:25:45,977 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-27 04:25:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:25:45,994 INFO L225 Difference]: With dead ends: 3993 [2020-10-27 04:25:45,994 INFO L226 Difference]: Without dead ends: 2257 [2020-10-27 04:25:46,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=543, Invalid=1809, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 04:25:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2020-10-27 04:25:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2041. [2020-10-27 04:25:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2041 states. [2020-10-27 04:25:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2798 transitions. [2020-10-27 04:25:46,195 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2798 transitions. Word has length 67 [2020-10-27 04:25:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:25:46,195 INFO L481 AbstractCegarLoop]: Abstraction has 2041 states and 2798 transitions. [2020-10-27 04:25:46,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:25:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2798 transitions. [2020-10-27 04:25:46,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 04:25:46,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:46,198 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] [2020-10-27 04:25:46,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:25:46,198 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash 789621961, now seen corresponding path program 1 times [2020-10-27 04:25:46,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:46,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526903508] [2020-10-27 04:25:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:46,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:46,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:51,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 04:25:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:25:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:25:51,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:25:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:25:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 04:25:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:51,480 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:25:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:51,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:51,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:25:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:25:51,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:51,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:51,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:25:51,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:25:51,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:25:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:25:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:25:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:51,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:51,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:51,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:25:51,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:25:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:25:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:51,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:51,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:51,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:25:51,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:25:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:25:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:51,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:51,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:25:51,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:51,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:25:51,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:25:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:25:51,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:25:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:51,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:51,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:51,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:25:51,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:25:51,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526903508] [2020-10-27 04:25:51,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:51,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:25:51,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620339952] [2020-10-27 04:25:51,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:25:51,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:51,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:25:51,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:25:51,794 INFO L87 Difference]: Start difference. First operand 2041 states and 2798 transitions. Second operand 13 states. [2020-10-27 04:25:51,969 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:25:52,135 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:25:52,478 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 04:25:52,967 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 04:25:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:25:53,814 INFO L93 Difference]: Finished difference Result 4522 states and 6092 transitions. [2020-10-27 04:25:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:25:53,814 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-27 04:25:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:25:53,830 INFO L225 Difference]: With dead ends: 4522 [2020-10-27 04:25:53,830 INFO L226 Difference]: Without dead ends: 2511 [2020-10-27 04:25:53,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:25:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-10-27 04:25:54,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2154. [2020-10-27 04:25:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-10-27 04:25:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2949 transitions. [2020-10-27 04:25:54,020 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2949 transitions. Word has length 67 [2020-10-27 04:25:54,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:25:54,020 INFO L481 AbstractCegarLoop]: Abstraction has 2154 states and 2949 transitions. [2020-10-27 04:25:54,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:25:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2949 transitions. [2020-10-27 04:25:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 04:25:54,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:54,022 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] [2020-10-27 04:25:54,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:25:54,022 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:54,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1902423673, now seen corresponding path program 1 times [2020-10-27 04:25:54,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:54,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100645116] [2020-10-27 04:25:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:54,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:54,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:57,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 04:25:57,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:25:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3733 [2020-10-27 04:25:57,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:25:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:25:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 04:25:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:57,940 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:25:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:57,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:57,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:57,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:25:57,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:25:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:57,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:57,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:57,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:25:57,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:25:57,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:25:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:25:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:25:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:58,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:58,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:58,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:58,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:25:58,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:25:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:25:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:58,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:58,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:25:58,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:25:58,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:25:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:25:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:25:58,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:25:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:58,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:58,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:25:58,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:25:58,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:25:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:25:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:58,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:58,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:58,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:58,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:25:58,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:25:58,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100645116] [2020-10-27 04:25:58,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:58,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:25:58,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032523643] [2020-10-27 04:25:58,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:25:58,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:58,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:25:58,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:25:58,190 INFO L87 Difference]: Start difference. First operand 2154 states and 2949 transitions. Second operand 13 states. [2020-10-27 04:25:58,564 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-27 04:25:58,749 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:25:59,262 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 04:26:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:00,869 INFO L93 Difference]: Finished difference Result 4155 states and 5714 transitions. [2020-10-27 04:26:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:26:00,869 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-27 04:26:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:00,885 INFO L225 Difference]: With dead ends: 4155 [2020-10-27 04:26:00,885 INFO L226 Difference]: Without dead ends: 2732 [2020-10-27 04:26:00,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:26:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2020-10-27 04:26:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2354. [2020-10-27 04:26:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-27 04:26:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3234 transitions. [2020-10-27 04:26:01,127 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3234 transitions. Word has length 67 [2020-10-27 04:26:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:01,128 INFO L481 AbstractCegarLoop]: Abstraction has 2354 states and 3234 transitions. [2020-10-27 04:26:01,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:26:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3234 transitions. [2020-10-27 04:26:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 04:26:01,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:01,129 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] [2020-10-27 04:26:01,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:26:01,130 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:01,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1592775635, now seen corresponding path program 1 times [2020-10-27 04:26:01,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:01,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815861339] [2020-10-27 04:26:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:05,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:05,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 04:26:05,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:26:05,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3986 [2020-10-27 04:26:05,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:26:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:26:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:26:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:05,307 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:26:05,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:26:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:05,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:05,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:05,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:26:05,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:26:05,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:26:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:26:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:05,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:05,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:26:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:26:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:26:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:26:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:26:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:05,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:05,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:05,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:26:05,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:05,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:26:05,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:05,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:26:05,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:26:05,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:26:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:05,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:26:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:05,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:05,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:26:05,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:26:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:05,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:26:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:05,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:05,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:26:05,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:26:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:26:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:05,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:26:05,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:26:05,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:26:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:26:05,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815861339] [2020-10-27 04:26:05,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:26:05,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:26:05,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751736651] [2020-10-27 04:26:05,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:26:05,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:26:05,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:26:05,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:26:05,559 INFO L87 Difference]: Start difference. First operand 2354 states and 3234 transitions. Second operand 13 states. [2020-10-27 04:26:05,910 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-27 04:26:06,095 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:26:06,585 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 04:26:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:08,221 INFO L93 Difference]: Finished difference Result 3528 states and 4895 transitions. [2020-10-27 04:26:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:26:08,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-27 04:26:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:08,240 INFO L225 Difference]: With dead ends: 3528 [2020-10-27 04:26:08,240 INFO L226 Difference]: Without dead ends: 3009 [2020-10-27 04:26:08,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:26:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2020-10-27 04:26:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 2399. [2020-10-27 04:26:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-10-27 04:26:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3304 transitions. [2020-10-27 04:26:08,479 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3304 transitions. Word has length 67 [2020-10-27 04:26:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:08,479 INFO L481 AbstractCegarLoop]: Abstraction has 2399 states and 3304 transitions. [2020-10-27 04:26:08,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:26:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3304 transitions. [2020-10-27 04:26:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 04:26:08,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:08,481 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] [2020-10-27 04:26:08,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:26:08,481 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:08,482 INFO L82 PathProgramCache]: Analyzing trace with hash 995183200, now seen corresponding path program 1 times [2020-10-27 04:26:08,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:08,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790180462] [2020-10-27 04:26:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:11,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:11,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:26:11,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:26:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2772 [2020-10-27 04:26:11,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:26:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 04:26:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:26:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:11,435 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:26:11,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:26:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:11,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:11,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:26:11,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:26:11,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:26:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:11,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:11,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:26:11,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:11,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:26:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:11,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:11,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:11,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:26:11,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:26:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:26:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:26:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:26:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:11,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:11,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:11,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:11,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:11,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:26:11,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:26:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:26:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:11,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:11,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:11,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:11,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:26:11,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:26:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:11,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:26:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:11,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:11,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:26:11,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:26:11,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:26:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:26:11,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790180462] [2020-10-27 04:26:11,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:26:11,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:26:11,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443308493] [2020-10-27 04:26:11,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:26:11,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:26:11,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:26:11,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:26:11,648 INFO L87 Difference]: Start difference. First operand 2399 states and 3304 transitions. Second operand 9 states. [2020-10-27 04:26:11,831 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:26:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:13,179 INFO L93 Difference]: Finished difference Result 4924 states and 6825 transitions. [2020-10-27 04:26:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:26:13,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-27 04:26:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:13,200 INFO L225 Difference]: With dead ends: 4924 [2020-10-27 04:26:13,200 INFO L226 Difference]: Without dead ends: 3320 [2020-10-27 04:26:13,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:26:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2020-10-27 04:26:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3272. [2020-10-27 04:26:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3272 states. [2020-10-27 04:26:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4452 transitions. [2020-10-27 04:26:13,530 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4452 transitions. Word has length 68 [2020-10-27 04:26:13,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:13,531 INFO L481 AbstractCegarLoop]: Abstraction has 3272 states and 4452 transitions. [2020-10-27 04:26:13,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:26:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4452 transitions. [2020-10-27 04:26:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 04:26:13,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:13,533 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] [2020-10-27 04:26:13,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:26:13,533 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:13,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:13,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1555316310, now seen corresponding path program 1 times [2020-10-27 04:26:13,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:13,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223472090] [2020-10-27 04:26:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:13,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:14,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:14,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:26:14,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:26:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-27 04:26:14,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:26:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 04:26:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:26:14,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:14,561 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:26:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:26:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:14,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:14,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:26:14,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:14,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:26:14,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:14,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:14,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:26:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:14,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:14,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:26:14,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:14,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:26:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:14,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:14,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:14,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:26:14,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:26:14,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:26:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:14,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:14,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:14,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:26:14,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:26:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:26:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:26:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:14,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:26:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:14,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:14,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:14,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:26:14,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:26:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:26:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:14,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:14,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:26:14,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:14,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:26:14,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:26:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:14,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:26:14,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223472090] [2020-10-27 04:26:14,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:26:14,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:26:14,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574116670] [2020-10-27 04:26:14,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:26:14,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:26:14,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:26:14,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:26:14,763 INFO L87 Difference]: Start difference. First operand 3272 states and 4452 transitions. Second operand 9 states. [2020-10-27 04:26:14,980 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:26:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:16,719 INFO L93 Difference]: Finished difference Result 8914 states and 12185 transitions. [2020-10-27 04:26:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:26:16,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-27 04:26:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:16,756 INFO L225 Difference]: With dead ends: 8914 [2020-10-27 04:26:16,756 INFO L226 Difference]: Without dead ends: 5685 [2020-10-27 04:26:16,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:26:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2020-10-27 04:26:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 5682. [2020-10-27 04:26:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5682 states. [2020-10-27 04:26:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5682 states to 5682 states and 7599 transitions. [2020-10-27 04:26:17,464 INFO L78 Accepts]: Start accepts. Automaton has 5682 states and 7599 transitions. Word has length 68 [2020-10-27 04:26:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:17,465 INFO L481 AbstractCegarLoop]: Abstraction has 5682 states and 7599 transitions. [2020-10-27 04:26:17,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:26:17,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5682 states and 7599 transitions. [2020-10-27 04:26:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 04:26:17,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:17,466 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] [2020-10-27 04:26:17,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:26:17,466 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash -823905504, now seen corresponding path program 1 times [2020-10-27 04:26:17,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:17,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412184388] [2020-10-27 04:26:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:17,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:17,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:26:17,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:17,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 04:26:17,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:17,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:26:17,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 04:26:17,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:26:17,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:17,943 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:26:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:26:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:17,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:17,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:26:17,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:26:17,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:17,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:26:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:17,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:17,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:26:17,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:26:17,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:17,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:17,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:17,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:17,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:17,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:26:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:18,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:18,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:18,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:26:18,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:26:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:18,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:18,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:26:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:18,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:26:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:18,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:18,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:18,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:26:18,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:18,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:26:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:18,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:18,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:18,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:26:18,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:18,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:26:18,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:26:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:26:18,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:26:18,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412184388] [2020-10-27 04:26:18,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:26:18,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:26:18,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271271931] [2020-10-27 04:26:18,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:26:18,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:26:18,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:26:18,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:26:18,127 INFO L87 Difference]: Start difference. First operand 5682 states and 7599 transitions. Second operand 12 states. [2020-10-27 04:26:18,776 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:26:18,939 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 04:26:19,118 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 04:26:19,294 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:26:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:20,303 INFO L93 Difference]: Finished difference Result 6117 states and 8350 transitions. [2020-10-27 04:26:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:26:20,304 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-27 04:26:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:20,345 INFO L225 Difference]: With dead ends: 6117 [2020-10-27 04:26:20,345 INFO L226 Difference]: Without dead ends: 6114 [2020-10-27 04:26:20,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:26:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2020-10-27 04:26:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 5790. [2020-10-27 04:26:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5790 states. [2020-10-27 04:26:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 7685 transitions. [2020-10-27 04:26:20,972 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 7685 transitions. Word has length 68 [2020-10-27 04:26:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:20,973 INFO L481 AbstractCegarLoop]: Abstraction has 5790 states and 7685 transitions. [2020-10-27 04:26:20,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:26:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 7685 transitions. [2020-10-27 04:26:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:26:20,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:20,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:26:20,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:26:20,977 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:20,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:20,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1924343117, now seen corresponding path program 1 times [2020-10-27 04:26:20,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:20,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078775145] [2020-10-27 04:26:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:21,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:26:26,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:26:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:26:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:26:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:26:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:26:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,275 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:26:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:26:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:26:26,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:26:26,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:26:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:26:26,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:26:26,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:26:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:26:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:26:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:26:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:26,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:26:26,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:26:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:26:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:26:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:26,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 04:26:26,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:26:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:26:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:26:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:26:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:26,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:26:26,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:26:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:26:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:26:26,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:26:26,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:26:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:26:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:26:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:26:26,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:26:26,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:26:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:26,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:26:26,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:26:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:26:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:26,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:26:26,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:26:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:26:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:26:26,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:26:26,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:26:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:26:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:26:26,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:26:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:26:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:26:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:26:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 04:26:26,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078775145] [2020-10-27 04:26:26,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:26:26,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:26:26,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650220624] [2020-10-27 04:26:26,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:26:26,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:26:26,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:26:26,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:26:26,961 INFO L87 Difference]: Start difference. First operand 5790 states and 7685 transitions. Second operand 18 states. [2020-10-27 04:26:27,203 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:26:27,411 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 04:26:27,925 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 119 [2020-10-27 04:26:28,707 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2020-10-27 04:26:28,868 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-27 04:26:29,004 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-27 04:26:29,496 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2020-10-27 04:26:29,665 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-27 04:26:29,803 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-27 04:26:29,969 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-27 04:26:30,101 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-27 04:26:30,693 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2020-10-27 04:26:31,317 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-27 04:26:31,712 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 123 [2020-10-27 04:26:31,944 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-27 04:26:32,571 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 123 [2020-10-27 04:26:32,748 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:26:33,530 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-27 04:26:34,664 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:26:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:36,314 INFO L93 Difference]: Finished difference Result 23218 states and 30914 transitions. [2020-10-27 04:26:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 04:26:36,314 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 106 [2020-10-27 04:26:36,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:36,397 INFO L225 Difference]: With dead ends: 23218 [2020-10-27 04:26:36,397 INFO L226 Difference]: Without dead ends: 18130 [2020-10-27 04:26:36,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 04:26:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2020-10-27 04:26:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 17577. [2020-10-27 04:26:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17577 states. [2020-10-27 04:26:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17577 states to 17577 states and 23274 transitions. [2020-10-27 04:26:38,505 INFO L78 Accepts]: Start accepts. Automaton has 17577 states and 23274 transitions. Word has length 106 [2020-10-27 04:26:38,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:38,505 INFO L481 AbstractCegarLoop]: Abstraction has 17577 states and 23274 transitions. [2020-10-27 04:26:38,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:26:38,505 INFO L276 IsEmpty]: Start isEmpty. Operand 17577 states and 23274 transitions. [2020-10-27 04:26:38,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:26:38,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:38,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:26:38,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:26:38,510 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:38,511 INFO L82 PathProgramCache]: Analyzing trace with hash -321421455, now seen corresponding path program 1 times [2020-10-27 04:26:38,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:38,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662483994] [2020-10-27 04:26:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:38,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:43,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:43,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:26:43,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:26:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:26:43,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:26:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:26:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 04:26:43,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:43,759 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:26:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:26:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:43,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:26:43,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:26:43,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:26:43,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:26:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:43,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:43,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:26:43,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:43,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:26:43,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:43,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:43,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:26:43,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:43,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:26:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:43,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:43,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:43,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:26:43,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:26:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:26:43,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:26:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:43,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:43,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:43,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:43,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:26:43,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:43,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:43,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:43,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:26:43,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:26:43,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:26:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:43,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:43,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:43,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:26:43,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:26:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:26:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:26:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:26:44,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:26:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:44,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:44,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:26:44,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:44,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:26:44,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:26:44,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:26:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:44,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:44,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:44,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:26:44,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:44,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:26:44,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:26:44,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:26:44,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:26:44,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:44,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:26:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:44,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:44,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:44,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:26:44,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:26:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:26:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:26:44,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:44,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:26:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:44,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:26:44,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:26:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:26:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:44,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:26:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:44,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:44,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:26:44,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:26:44,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:26:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:26:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:44,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:26:44,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:26:44,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:26:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:26:44,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:26:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:26:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:26:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:26:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:26:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 04:26:44,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662483994] [2020-10-27 04:26:44,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:26:44,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:26:44,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134823779] [2020-10-27 04:26:44,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:26:44,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:26:44,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:26:44,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:26:44,239 INFO L87 Difference]: Start difference. First operand 17577 states and 23274 transitions. Second operand 15 states. [2020-10-27 04:26:44,454 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:26:44,804 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 04:26:45,448 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2020-10-27 04:26:45,846 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:26:47,023 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2020-10-27 04:26:48,447 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:26:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:26:51,257 INFO L93 Difference]: Finished difference Result 69233 states and 90562 transitions. [2020-10-27 04:26:51,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:26:51,258 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 106 [2020-10-27 04:26:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:26:51,476 INFO L225 Difference]: With dead ends: 69233 [2020-10-27 04:26:51,477 INFO L226 Difference]: Without dead ends: 55547 [2020-10-27 04:26:51,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:26:51,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55547 states. [2020-10-27 04:26:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55547 to 53045. [2020-10-27 04:26:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53045 states. [2020-10-27 04:26:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53045 states to 53045 states and 69637 transitions. [2020-10-27 04:26:56,754 INFO L78 Accepts]: Start accepts. Automaton has 53045 states and 69637 transitions. Word has length 106 [2020-10-27 04:26:56,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:26:56,754 INFO L481 AbstractCegarLoop]: Abstraction has 53045 states and 69637 transitions. [2020-10-27 04:26:56,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:26:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 53045 states and 69637 transitions. [2020-10-27 04:26:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:26:56,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:26:56,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:26:56,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:26:56,762 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:26:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:26:56,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1121189443, now seen corresponding path program 1 times [2020-10-27 04:26:56,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:26:56,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750023854] [2020-10-27 04:26:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:26:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:26:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:57,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:26:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:01,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:01,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:27:01,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:27:01,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:27:01,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:27:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:27:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 04:27:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:01,971 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:27:01,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:27:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:01,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:01,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:27:01,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:27:01,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:01,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:27:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:27:02,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:27:02,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:27:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:27:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:02,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:27:02,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:27:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:27:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:27:02,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,219 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-27 04:27:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:27:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:02,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:27:02,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:27:02,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:27:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:02,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:27:02,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:27:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:27:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:27:02,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:27:02,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:27:02,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:27:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:27:02,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:27:02,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:02,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:27:02,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:27:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:27:02,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:27:02,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:27:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:27:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:27:02,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:27:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:27:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:27:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:27:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:02,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:27:02,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:27:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:27:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:02,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:02,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:27:02,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:02,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:27:02,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:27:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 04:27:02,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750023854] [2020-10-27 04:27:02,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:27:02,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:27:02,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70508784] [2020-10-27 04:27:02,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:27:02,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:27:02,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:27:02,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:27:02,494 INFO L87 Difference]: Start difference. First operand 53045 states and 69637 transitions. Second operand 15 states. [2020-10-27 04:27:02,714 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:27:03,057 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 04:27:03,557 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 134 [2020-10-27 04:27:03,901 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:27:04,541 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:27:05,297 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 136 [2020-10-27 04:27:05,718 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:27:07,824 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 04:27:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:27:17,741 INFO L93 Difference]: Finished difference Result 225703 states and 300398 transitions. [2020-10-27 04:27:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:27:17,742 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 106 [2020-10-27 04:27:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:27:19,163 INFO L225 Difference]: With dead ends: 225703 [2020-10-27 04:27:19,163 INFO L226 Difference]: Without dead ends: 172730 [2020-10-27 04:27:19,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=526, Invalid=2230, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 04:27:19,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172730 states. [2020-10-27 04:27:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172730 to 148643. [2020-10-27 04:27:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148643 states. [2020-10-27 04:27:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148643 states to 148643 states and 197424 transitions. [2020-10-27 04:27:33,455 INFO L78 Accepts]: Start accepts. Automaton has 148643 states and 197424 transitions. Word has length 106 [2020-10-27 04:27:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:27:33,456 INFO L481 AbstractCegarLoop]: Abstraction has 148643 states and 197424 transitions. [2020-10-27 04:27:33,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:27:33,456 INFO L276 IsEmpty]: Start isEmpty. Operand 148643 states and 197424 transitions. [2020-10-27 04:27:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:27:33,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:27:33,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:27:33,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:27:33,472 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:27:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:27:33,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1866772173, now seen corresponding path program 1 times [2020-10-27 04:27:33,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:27:33,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117924517] [2020-10-27 04:27:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:27:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:38,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:38,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:27:38,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:27:38,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:27:38,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:27:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:27:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 04:27:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:38,706 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:27:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:27:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:38,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:38,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:27:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:27:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:27:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:38,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:38,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:27:38,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:27:38,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:27:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:27:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:27:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:38,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:38,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:38,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:27:38,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:27:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:38,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:27:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:38,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:27:38,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:38,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:27:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:38,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:38,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:38,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:27:38,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:27:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:27:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:27:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:39,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:27:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:39,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:39,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:27:39,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:27:39,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:27:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:27:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:39,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:39,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:39,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:27:39,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:27:39,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:27:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:27:39,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:27:39,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:39,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:27:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:39,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:39,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:27:39,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:27:39,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:27:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:27:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:27:39,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:27:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:39,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:39,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:39,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:39,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:39,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:27:39,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:39,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:39,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:27:39,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:39,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:39,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:27:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:39,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:39,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:27:39,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:27:39,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:27:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:27:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:27:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:27:39,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:27:39,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:27:39,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:27:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:27:39,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:27:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:27:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:27:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:27:39,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:27:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 04:27:39,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117924517] [2020-10-27 04:27:39,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:27:39,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:27:39,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140320856] [2020-10-27 04:27:39,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:27:39,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:27:39,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:27:39,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:27:39,179 INFO L87 Difference]: Start difference. First operand 148643 states and 197424 transitions. Second operand 18 states. [2020-10-27 04:27:39,385 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 04:27:39,587 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 04:27:39,882 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:27:40,521 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:27:40,954 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:27:42,126 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:27:42,342 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-27 04:27:44,067 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:27:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:27:52,605 INFO L93 Difference]: Finished difference Result 187709 states and 247808 transitions. [2020-10-27 04:27:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 04:27:52,606 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 106 [2020-10-27 04:27:52,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:27:53,370 INFO L225 Difference]: With dead ends: 187709 [2020-10-27 04:27:53,370 INFO L226 Difference]: Without dead ends: 154232 [2020-10-27 04:27:53,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=499, Invalid=1951, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 04:27:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154232 states. [2020-10-27 04:28:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154232 to 148643. [2020-10-27 04:28:05,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148643 states. [2020-10-27 04:28:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148643 states to 148643 states and 196904 transitions. [2020-10-27 04:28:06,387 INFO L78 Accepts]: Start accepts. Automaton has 148643 states and 196904 transitions. Word has length 106 [2020-10-27 04:28:06,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:28:06,387 INFO L481 AbstractCegarLoop]: Abstraction has 148643 states and 196904 transitions. [2020-10-27 04:28:06,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:28:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 148643 states and 196904 transitions. [2020-10-27 04:28:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:28:06,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:28:06,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:28:06,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:28:06,422 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:28:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:28:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash -303352645, now seen corresponding path program 1 times [2020-10-27 04:28:06,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:28:06,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364682794] [2020-10-27 04:28:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:28:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:28:11,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:28:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:28:11,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:28:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:28:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 04:28:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,658 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 04:28:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:28:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:28:11,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:28:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:28:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:28:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:28:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:28:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:28:11,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:28:11,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:28:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:28:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:28:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:28:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:28:11,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:28:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:28:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:28:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:28:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:28:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:28:11,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:28:11,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:28:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:28:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:28:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:28:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:28:11,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:28:11,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:28:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:28:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:28:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:28:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:28:11,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:28:11,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:28:11,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:28:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:28:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:28:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:28:11,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:28:11,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:28:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:28:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:28:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:28:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:28:11,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:28:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:28:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:28:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:28:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:28:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:11,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:28:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:28:11,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:28:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:28:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:28:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:12,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:28:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:12,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:28:12,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:28:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:28:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:28:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:28:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:12,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:28:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:28:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:28:12,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:28:12,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:28:12,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:28:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:28:12,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:28:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:28:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:28:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:28:12,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:28:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 04:28:12,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364682794] [2020-10-27 04:28:12,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:28:12,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:28:12,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293739661] [2020-10-27 04:28:12,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:28:12,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:28:12,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:28:12,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:28:12,039 INFO L87 Difference]: Start difference. First operand 148643 states and 196904 transitions. Second operand 18 states. [2020-10-27 04:28:12,287 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 04:28:12,489 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 04:28:12,770 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 04:28:13,094 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:28:13,542 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:28:14,294 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:28:14,848 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:28:15,065 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-27 04:28:15,446 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:28:15,618 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:28:18,283 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 04:28:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:28:29,563 INFO L93 Difference]: Finished difference Result 273481 states and 363984 transitions. [2020-10-27 04:28:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 04:28:29,563 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 106 [2020-10-27 04:28:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:28:30,762 INFO L225 Difference]: With dead ends: 273481 [2020-10-27 04:28:30,762 INFO L226 Difference]: Without dead ends: 171974 [2020-10-27 04:28:30,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=733, Invalid=2927, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 04:28:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171974 states.