/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_floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:17:51,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:17:51,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:17:51,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:17:51,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:17:51,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:17:51,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:17:51,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:17:51,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:17:51,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:17:51,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:17:51,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:17:51,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:17:51,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:17:51,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:17:51,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:17:51,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:17:51,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:17:51,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:17:51,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:17:51,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:17:51,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:17:51,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:17:51,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:17:51,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:17:51,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:17:51,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:17:51,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:17:51,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:17:51,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:17:51,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:17:51,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:17:51,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:17:51,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:17:51,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:17:51,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:17:51,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:17:51,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:17:51,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:17:51,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:17:51,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:17:51,826 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 04:17:51,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:17:51,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:17:51,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:17:51,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:17:51,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:17:51,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:17:51,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:17:51,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:17:51,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:17:51,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:17:51,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:17:51,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:17:51,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:17:51,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:17:51,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:17:51,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:17:51,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:17:51,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:17:51,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:17:51,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:17:51,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:17:51,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:17:51,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:17:51,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:17:51,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:17:51,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:17:51,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:17:51,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:17:51,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:17:51,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:17:52,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:17:52,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:17:52,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:17:52,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:17:52,401 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:17:52,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 04:17:52,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9593d8eec/6477ab204064458c8150ab6332e5c803/FLAGa8c265eb6 [2020-10-27 04:17:53,151 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:17:53,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 04:17:53,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9593d8eec/6477ab204064458c8150ab6332e5c803/FLAGa8c265eb6 [2020-10-27 04:17:53,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9593d8eec/6477ab204064458c8150ab6332e5c803 [2020-10-27 04:17:53,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:17:53,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:17:53,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:17:53,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:17:53,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:17:53,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:17:53" (1/1) ... [2020-10-27 04:17:53,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2822bfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53, skipping insertion in model container [2020-10-27 04:17:53,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:17:53" (1/1) ... [2020-10-27 04:17:53,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:17:53,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:17:53,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:17:53,879 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:17:53,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:17:54,019 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:17:54,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54 WrapperNode [2020-10-27 04:17:54,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:17:54,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:17:54,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:17:54,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:17:54,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (1/1) ... [2020-10-27 04:17:54,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (1/1) ... [2020-10-27 04:17:54,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (1/1) ... [2020-10-27 04:17:54,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (1/1) ... [2020-10-27 04:17:54,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (1/1) ... [2020-10-27 04:17:54,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (1/1) ... [2020-10-27 04:17:54,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (1/1) ... [2020-10-27 04:17:54,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:17:54,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:17:54,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:17:54,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:17:54,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (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 04:17:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:17:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:17:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:17:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:17:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:17:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:17:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:17:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:17:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:17:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:17:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:17:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:17:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:17:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:17:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:17:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:17:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:17:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:17:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:17:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:17:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:17:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:17:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:17:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:17:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:17:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:17:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:17:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:17:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:17:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:17:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:17:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:17:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:17:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:17:55,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:17:55,091 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:17:55,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:17:55 BoogieIcfgContainer [2020-10-27 04:17:55,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:17:55,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:17:55,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:17:55,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:17:55,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:17:53" (1/3) ... [2020-10-27 04:17:55,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ce752a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:17:55, skipping insertion in model container [2020-10-27 04:17:55,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:54" (2/3) ... [2020-10-27 04:17:55,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ce752a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:17:55, skipping insertion in model container [2020-10-27 04:17:55,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:17:55" (3/3) ... [2020-10-27 04:17:55,105 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 04:17:55,118 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:17:55,123 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:17:55,140 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:17:55,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:17:55,173 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:17:55,173 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:17:55,173 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:17:55,173 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:17:55,174 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:17:55,174 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:17:55,174 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:17:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-27 04:17:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 04:17:55,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:55,213 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] [2020-10-27 04:17:55,213 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:55,220 INFO L82 PathProgramCache]: Analyzing trace with hash -2013799790, now seen corresponding path program 1 times [2020-10-27 04:17:55,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:55,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771001886] [2020-10-27 04:17:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:56,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:17:56,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-27 04:17:56,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 04:17:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:17:56,408 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:56,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:56,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:17:56,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:56,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:17:56,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:17:56,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:56,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:17:56,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:17:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:56,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:17:56,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:56,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:17:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:17:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:17:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:56,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:56,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:17:56,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:17:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:17:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:56,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:56,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:17:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:56,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:17:56,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:17:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:56,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:17:56,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:17:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:17:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:56,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:56,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:17:56,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:56,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:56,824 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 04:17:56,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771001886] [2020-10-27 04:17:56,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:56,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:17:56,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385226242] [2020-10-27 04:17:56,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:17:56,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:56,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:17:56,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:17:56,853 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 6 states. [2020-10-27 04:17:58,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:58,022 INFO L93 Difference]: Finished difference Result 262 states and 417 transitions. [2020-10-27 04:17:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:17:58,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-27 04:17:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:58,038 INFO L225 Difference]: With dead ends: 262 [2020-10-27 04:17:58,038 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 04:17:58,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 04:17:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2020-10-27 04:17:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 04:17:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 247 transitions. [2020-10-27 04:17:58,111 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 247 transitions. Word has length 63 [2020-10-27 04:17:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:58,112 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 247 transitions. [2020-10-27 04:17:58,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:17:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 247 transitions. [2020-10-27 04:17:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 04:17:58,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:58,116 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] [2020-10-27 04:17:58,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:17:58,116 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:58,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:58,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1886800720, now seen corresponding path program 1 times [2020-10-27 04:17:58,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:58,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775664146] [2020-10-27 04:17:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-27 04:17:58,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:17:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:17:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:17:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,327 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:59,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:17:59,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:17:59,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:17:59,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:17:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:17:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:17:59,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:17:59,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:17:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:17:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:59,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:17:59,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:59,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:17:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:59,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:17:59,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:59,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 04:17:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:17:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:17:59,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:17:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:59,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:17:59,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,774 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 04:17:59,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775664146] [2020-10-27 04:17:59,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:59,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:17:59,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607357288] [2020-10-27 04:17:59,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:17:59,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:59,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:17:59,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:17:59,780 INFO L87 Difference]: Start difference. First operand 154 states and 247 transitions. Second operand 12 states. [2020-10-27 04:18:00,533 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:00,886 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:18:01,334 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:18:01,648 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:03,448 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2020-10-27 04:18:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:18:03,448 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-27 04:18:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:03,454 INFO L225 Difference]: With dead ends: 257 [2020-10-27 04:18:03,455 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 04:18:03,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:18:03,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 04:18:03,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2020-10-27 04:18:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 04:18:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 220 transitions. [2020-10-27 04:18:03,509 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 220 transitions. Word has length 63 [2020-10-27 04:18:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:03,509 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 220 transitions. [2020-10-27 04:18:03,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:18:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 220 transitions. [2020-10-27 04:18:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:18:03,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:03,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:18:03,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:18:03,520 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:03,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:03,521 INFO L82 PathProgramCache]: Analyzing trace with hash -454625351, now seen corresponding path program 1 times [2020-10-27 04:18:03,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:03,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510714558] [2020-10-27 04:18:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:03,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:08,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:08,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:18:08,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:18:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:18:08,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:18:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:18:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:18:08,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:18:09,002 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:09,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:09,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:18:09,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:09,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:09,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:18:09,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:18:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:18:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:09,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:09,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:09,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:18:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:09,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:18:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:18:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:18:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:18:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:18:09,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:18:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:09,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:09,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:18:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:09,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:18:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:09,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:09,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,354 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 04:18:09,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510714558] [2020-10-27 04:18:09,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:09,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:09,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025165823] [2020-10-27 04:18:09,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:09,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:09,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:09,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:09,357 INFO L87 Difference]: Start difference. First operand 154 states and 220 transitions. Second operand 9 states. [2020-10-27 04:18:09,644 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:11,869 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:18:12,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:12,382 INFO L93 Difference]: Finished difference Result 350 states and 523 transitions. [2020-10-27 04:18:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:18:12,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-27 04:18:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:12,393 INFO L225 Difference]: With dead ends: 350 [2020-10-27 04:18:12,394 INFO L226 Difference]: Without dead ends: 265 [2020-10-27 04:18:12,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:18:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-27 04:18:12,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 232. [2020-10-27 04:18:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-27 04:18:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 335 transitions. [2020-10-27 04:18:12,459 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 335 transitions. Word has length 89 [2020-10-27 04:18:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:12,462 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 335 transitions. [2020-10-27 04:18:12,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 335 transitions. [2020-10-27 04:18:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:18:12,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:12,466 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, 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 04:18:12,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:18:12,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -351175052, now seen corresponding path program 1 times [2020-10-27 04:18:12,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:12,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966096697] [2020-10-27 04:18:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:18:17,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:17,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:18:17,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:18:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:18:17,851 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:17,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:18:17,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:17,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:17,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:17,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:17,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:17,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:17,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 04:18:17,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:17,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:17,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:18:17,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:18,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:18:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:18,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:18,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:18,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:18,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:18,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:18:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:18,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:18,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:18,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:18,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:18:18,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:18:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:18:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:18:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:18,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:18,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:18,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:18:18,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:18:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:18,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:18,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:18,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:18,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:18,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:18:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:18,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:18,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:18,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:18,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:18,252 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 04:18:18,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966096697] [2020-10-27 04:18:18,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:18,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:18,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114020780] [2020-10-27 04:18:18,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:18,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:18,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:18,255 INFO L87 Difference]: Start difference. First operand 232 states and 335 transitions. Second operand 9 states. [2020-10-27 04:18:18,595 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:19,005 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:19,448 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:20,319 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:18:21,204 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:24,474 INFO L93 Difference]: Finished difference Result 802 states and 1151 transitions. [2020-10-27 04:18:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:24,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 04:18:24,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:24,480 INFO L225 Difference]: With dead ends: 802 [2020-10-27 04:18:24,481 INFO L226 Difference]: Without dead ends: 597 [2020-10-27 04:18:24,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-27 04:18:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 547. [2020-10-27 04:18:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-27 04:18:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 775 transitions. [2020-10-27 04:18:24,555 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 775 transitions. Word has length 91 [2020-10-27 04:18:24,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:24,555 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 775 transitions. [2020-10-27 04:18:24,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 775 transitions. [2020-10-27 04:18:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:18:24,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:24,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:18:24,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:18:24,559 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1578423210, now seen corresponding path program 1 times [2020-10-27 04:18:24,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:24,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402224617] [2020-10-27 04:18:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:29,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:29,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:18:29,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:18:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:18:29,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:18:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:29,895 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:29,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:18:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:29,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:29,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:29,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:18:29,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:18:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:18:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:30,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:30,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:30,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:30,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:30,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:18:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:30,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:30,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:18:30,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:18:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:30,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:18:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:30,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:30,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:30,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:30,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:18:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:30,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:30,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:30,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:30,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:18:30,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:30,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:30,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:30,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:30,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:18:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:30,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:30,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:30,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:30,287 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 04:18:30,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402224617] [2020-10-27 04:18:30,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:30,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:30,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130761916] [2020-10-27 04:18:30,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:30,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:30,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:30,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:30,291 INFO L87 Difference]: Start difference. First operand 547 states and 775 transitions. Second operand 9 states. [2020-10-27 04:18:30,610 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:30,977 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:18:31,349 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:18:32,397 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-27 04:18:33,154 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:35,935 INFO L93 Difference]: Finished difference Result 1915 states and 2701 transitions. [2020-10-27 04:18:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:35,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 04:18:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:35,947 INFO L225 Difference]: With dead ends: 1915 [2020-10-27 04:18:35,947 INFO L226 Difference]: Without dead ends: 1414 [2020-10-27 04:18:35,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:35,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-10-27 04:18:36,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1343. [2020-10-27 04:18:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1343 states. [2020-10-27 04:18:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1864 transitions. [2020-10-27 04:18:36,094 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1864 transitions. Word has length 91 [2020-10-27 04:18:36,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:36,095 INFO L481 AbstractCegarLoop]: Abstraction has 1343 states and 1864 transitions. [2020-10-27 04:18:36,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1864 transitions. [2020-10-27 04:18:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:18:36,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:36,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:18:36,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:18:36,100 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:36,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1397432072, now seen corresponding path program 1 times [2020-10-27 04:18:36,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:36,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773294502] [2020-10-27 04:18:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:38,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:41,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:18:41,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:18:41,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:18:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:18:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:18:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:41,501 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:41,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:41,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:41,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:18:41,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:18:41,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:41,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:41,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:41,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:41,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 04:18:41,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:18:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 04:18:41,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:18:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:41,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:41,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:18:41,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:41,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:18:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:41,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:41,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:18:41,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:41,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:18:41,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:18:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:18:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:18:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:18:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:41,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:41,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:41,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:41,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:41,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:18:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:41,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:41,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:41,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:41,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:18:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:41,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:41,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:41,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:41,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:41,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:41,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:41,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:41,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:41,932 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 04:18:41,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773294502] [2020-10-27 04:18:41,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:41,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:18:41,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102490676] [2020-10-27 04:18:41,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:18:41,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:41,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:18:41,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:18:41,940 INFO L87 Difference]: Start difference. First operand 1343 states and 1864 transitions. Second operand 14 states. [2020-10-27 04:18:42,316 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:42,641 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:43,304 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:18:43,915 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:18:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:46,457 INFO L93 Difference]: Finished difference Result 2356 states and 3423 transitions. [2020-10-27 04:18:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:18:46,458 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-27 04:18:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:46,474 INFO L225 Difference]: With dead ends: 2356 [2020-10-27 04:18:46,474 INFO L226 Difference]: Without dead ends: 2106 [2020-10-27 04:18:46,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:18:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-10-27 04:18:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1485. [2020-10-27 04:18:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-10-27 04:18:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2077 transitions. [2020-10-27 04:18:46,631 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2077 transitions. Word has length 92 [2020-10-27 04:18:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:46,632 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2077 transitions. [2020-10-27 04:18:46,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:18:46,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2077 transitions. [2020-10-27 04:18:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:18:46,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:46,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:18:46,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:18:46,637 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:46,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:46,637 INFO L82 PathProgramCache]: Analyzing trace with hash -695832198, now seen corresponding path program 1 times [2020-10-27 04:18:46,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:46,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954642842] [2020-10-27 04:18:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:46,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:51,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:51,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:18:51,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:18:51,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:18:51,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 04:18:51,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:52,027 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:52,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:52,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:52,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:52,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:18:52,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:52,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:52,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:52,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:52,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:52,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 04:18:52,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:18:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:18:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:52,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:52,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:52,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:52,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:18:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:52,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:52,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:18:52,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:18:52,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:18:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:52,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:18:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:52,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:52,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:18:52,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:52,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:18:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:52,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:52,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:52,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:52,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:52,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:52,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:18:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:52,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:52,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:52,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:52,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:52,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:52,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:52,448 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 04:18:52,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954642842] [2020-10-27 04:18:52,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:52,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:52,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009787935] [2020-10-27 04:18:52,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:52,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:52,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:52,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:52,456 INFO L87 Difference]: Start difference. First operand 1485 states and 2077 transitions. Second operand 9 states. [2020-10-27 04:18:52,795 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:53,126 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:53,567 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:54,218 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:18:55,352 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:58,819 INFO L93 Difference]: Finished difference Result 4942 states and 6973 transitions. [2020-10-27 04:18:58,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:58,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-27 04:18:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:58,840 INFO L225 Difference]: With dead ends: 4942 [2020-10-27 04:18:58,840 INFO L226 Difference]: Without dead ends: 3563 [2020-10-27 04:18:58,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:58,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2020-10-27 04:18:59,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3480. [2020-10-27 04:18:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3480 states. [2020-10-27 04:18:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 4819 transitions. [2020-10-27 04:18:59,154 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 4819 transitions. Word has length 92 [2020-10-27 04:18:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:59,154 INFO L481 AbstractCegarLoop]: Abstraction has 3480 states and 4819 transitions. [2020-10-27 04:18:59,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 4819 transitions. [2020-10-27 04:18:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:18:59,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:59,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:18:59,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:18:59,164 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:59,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:59,164 INFO L82 PathProgramCache]: Analyzing trace with hash 366513455, now seen corresponding path program 1 times [2020-10-27 04:18:59,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:59,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402657497] [2020-10-27 04:18:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:02,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:04,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:19:04,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:19:04,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:19:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:19:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:04,483 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:04,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:04,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:04,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:19:04,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 04:19:04,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:19:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:19:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:04,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:04,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:04,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:04,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:19:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:19:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:04,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:04,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:19:04,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:19:04,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:19:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:19:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:04,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:04,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:04,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:19:04,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:04,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:04,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:04,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:04,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:19:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:04,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:19:04,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:19:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:04,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:04,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:04,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:04,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:04,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:04,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:04,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:04,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:04,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:04,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:04,916 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 04:19:04,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402657497] [2020-10-27 04:19:04,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:04,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:04,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110573847] [2020-10-27 04:19:04,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:04,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:04,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:04,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:04,920 INFO L87 Difference]: Start difference. First operand 3480 states and 4819 transitions. Second operand 9 states. [2020-10-27 04:19:05,229 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:05,566 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:19:05,923 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:19:06,793 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:19:07,685 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:11,154 INFO L93 Difference]: Finished difference Result 10891 states and 15366 transitions. [2020-10-27 04:19:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:19:11,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-27 04:19:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:11,201 INFO L225 Difference]: With dead ends: 10891 [2020-10-27 04:19:11,202 INFO L226 Difference]: Without dead ends: 8230 [2020-10-27 04:19:11,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:19:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2020-10-27 04:19:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 8076. [2020-10-27 04:19:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8076 states. [2020-10-27 04:19:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8076 states to 8076 states and 11097 transitions. [2020-10-27 04:19:11,990 INFO L78 Accepts]: Start accepts. Automaton has 8076 states and 11097 transitions. Word has length 92 [2020-10-27 04:19:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:11,990 INFO L481 AbstractCegarLoop]: Abstraction has 8076 states and 11097 transitions. [2020-10-27 04:19:11,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand 8076 states and 11097 transitions. [2020-10-27 04:19:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:19:12,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:12,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:19:12,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:19:12,010 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:12,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:12,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2024521445, now seen corresponding path program 1 times [2020-10-27 04:19:12,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:12,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414506779] [2020-10-27 04:19:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:15,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:17,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:19:17,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:17,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:19:17,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:19:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:19:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:17,341 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:17,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:17,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:19:17,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:17,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:17,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:17,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:19:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:19:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:17,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:17,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:17,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:17,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:17,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:19:17,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:19:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:17,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:19:17,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:19:17,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:19:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:19:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:17,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:17,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:17,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:19:17,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:17,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:17,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:17,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:17,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:17,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:19:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:17,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:17,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:19:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:17,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:17,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:17,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:17,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:17,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:17,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:17,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:17,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:17,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:17,619 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 04:19:17,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414506779] [2020-10-27 04:19:17,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:17,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 04:19:17,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505238205] [2020-10-27 04:19:17,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:19:17,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:17,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:19:17,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:19:17,621 INFO L87 Difference]: Start difference. First operand 8076 states and 11097 transitions. Second operand 7 states. [2020-10-27 04:19:18,095 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:19:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:20,095 INFO L93 Difference]: Finished difference Result 15902 states and 21628 transitions. [2020-10-27 04:19:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:19:20,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-27 04:19:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:20,150 INFO L225 Difference]: With dead ends: 15902 [2020-10-27 04:19:20,151 INFO L226 Difference]: Without dead ends: 9298 [2020-10-27 04:19:20,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:19:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2020-10-27 04:19:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 8112. [2020-10-27 04:19:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8112 states. [2020-10-27 04:19:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 11125 transitions. [2020-10-27 04:19:20,917 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 11125 transitions. Word has length 93 [2020-10-27 04:19:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:20,918 INFO L481 AbstractCegarLoop]: Abstraction has 8112 states and 11125 transitions. [2020-10-27 04:19:20,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:19:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 11125 transitions. [2020-10-27 04:19:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:19:20,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:20,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:19:20,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:19:20,939 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:20,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:20,940 INFO L82 PathProgramCache]: Analyzing trace with hash 707788248, now seen corresponding path program 1 times [2020-10-27 04:19:20,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:20,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49450895] [2020-10-27 04:19:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:21,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:19:26,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:26,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:19:26,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:19:26,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:26,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:19:26,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,401 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:26,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:19:26,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:19:26,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:19:26,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 04:19:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 04:19:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:19:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:26,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:26,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:19:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:19:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:26,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:19:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:26,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:19:26,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:19:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:26,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:19:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:26,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:26,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:26,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,902 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 04:19:26,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49450895] [2020-10-27 04:19:26,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:26,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:19:26,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791526348] [2020-10-27 04:19:26,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:19:26,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:26,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:19:26,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:19:26,905 INFO L87 Difference]: Start difference. First operand 8112 states and 11125 transitions. Second operand 14 states. [2020-10-27 04:19:27,316 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:19:27,647 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:19:28,288 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:28,876 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:19:29,240 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-27 04:19:31,253 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-27 04:19:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:31,925 INFO L93 Difference]: Finished difference Result 12232 states and 17296 transitions. [2020-10-27 04:19:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:19:31,926 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-27 04:19:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:31,965 INFO L225 Difference]: With dead ends: 12232 [2020-10-27 04:19:31,965 INFO L226 Difference]: Without dead ends: 10759 [2020-10-27 04:19:31,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:19:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states. [2020-10-27 04:19:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10759 to 8337. [2020-10-27 04:19:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8337 states. [2020-10-27 04:19:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 11421 transitions. [2020-10-27 04:19:32,665 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 11421 transitions. Word has length 93 [2020-10-27 04:19:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:32,665 INFO L481 AbstractCegarLoop]: Abstraction has 8337 states and 11421 transitions. [2020-10-27 04:19:32,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:19:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 11421 transitions. [2020-10-27 04:19:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:19:32,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:32,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:19:32,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:19:32,689 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:32,689 INFO L82 PathProgramCache]: Analyzing trace with hash 730420502, now seen corresponding path program 1 times [2020-10-27 04:19:32,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:32,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603472218] [2020-10-27 04:19:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:32,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:37,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:37,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:19:37,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:19:37,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:19:37,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:19:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:19:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,056 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:38,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:19:38,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:19:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:38,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:38,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:19:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:19:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:38,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:19:38,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:19:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:19:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:38,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:19:38,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:38,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:38,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:38,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:19:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:38,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:19:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:19:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:38,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:38,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,347 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 04:19:38,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603472218] [2020-10-27 04:19:38,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:38,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:38,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329924699] [2020-10-27 04:19:38,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:38,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:38,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:38,350 INFO L87 Difference]: Start difference. First operand 8337 states and 11421 transitions. Second operand 9 states. [2020-10-27 04:19:38,703 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:42,335 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:19:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:42,674 INFO L93 Difference]: Finished difference Result 17130 states and 24191 transitions. [2020-10-27 04:19:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:19:42,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-27 04:19:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:42,725 INFO L225 Difference]: With dead ends: 17130 [2020-10-27 04:19:42,725 INFO L226 Difference]: Without dead ends: 11943 [2020-10-27 04:19:42,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:19:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11943 states. [2020-10-27 04:19:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11943 to 11681. [2020-10-27 04:19:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11681 states. [2020-10-27 04:19:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11681 states to 11681 states and 16136 transitions. [2020-10-27 04:19:43,910 INFO L78 Accepts]: Start accepts. Automaton has 11681 states and 16136 transitions. Word has length 93 [2020-10-27 04:19:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:43,911 INFO L481 AbstractCegarLoop]: Abstraction has 11681 states and 16136 transitions. [2020-10-27 04:19:43,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 11681 states and 16136 transitions. [2020-10-27 04:19:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:19:43,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:43,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:19:43,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:19:43,933 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:43,933 INFO L82 PathProgramCache]: Analyzing trace with hash 153527280, now seen corresponding path program 1 times [2020-10-27 04:19:43,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:43,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922416689] [2020-10-27 04:19:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:44,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:48,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:48,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:19:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:19:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:19:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 04:19:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:49,249 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:49,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:19:49,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:49,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:19:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:49,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:49,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:49,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:49,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:19:49,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:19:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:49,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:19:49,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:19:49,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:49,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:19:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:19:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:49,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:19:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:49,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:49,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:19:49,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:49,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:19:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:49,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:49,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:49,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:49,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:49,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:49,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:49,660 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 04:19:49,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922416689] [2020-10-27 04:19:49,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:49,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:49,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106889841] [2020-10-27 04:19:49,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:49,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:49,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:49,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:49,662 INFO L87 Difference]: Start difference. First operand 11681 states and 16136 transitions. Second operand 9 states. [2020-10-27 04:19:49,984 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:50,322 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:19:50,729 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:19:51,336 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:19:52,405 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:57,532 INFO L93 Difference]: Finished difference Result 37381 states and 52920 transitions. [2020-10-27 04:19:57,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:19:57,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 04:19:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:57,659 INFO L225 Difference]: With dead ends: 37381 [2020-10-27 04:19:57,659 INFO L226 Difference]: Without dead ends: 27550 [2020-10-27 04:19:57,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:19:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27550 states. [2020-10-27 04:19:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27550 to 27118. [2020-10-27 04:19:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27118 states. [2020-10-27 04:19:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27118 states to 27118 states and 37574 transitions. [2020-10-27 04:19:59,930 INFO L78 Accepts]: Start accepts. Automaton has 27118 states and 37574 transitions. Word has length 95 [2020-10-27 04:19:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:59,931 INFO L481 AbstractCegarLoop]: Abstraction has 27118 states and 37574 transitions. [2020-10-27 04:19:59,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 27118 states and 37574 transitions. [2020-10-27 04:19:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:19:59,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:59,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:19:59,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:19:59,980 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:59,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1645506415, now seen corresponding path program 1 times [2020-10-27 04:19:59,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:59,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596505746] [2020-10-27 04:19:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:20:05,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:20:05,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:20:05,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:20:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:20:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,301 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:05,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:20:05,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:05,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:20:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 04:20:05,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:20:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:20:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:20:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:05,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:20:05,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:20:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:20:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:05,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:05,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:20:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:20:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:05,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:05,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:20:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:05,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:05,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:05,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,895 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 04:20:05,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596505746] [2020-10-27 04:20:05,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:05,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:20:05,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698939584] [2020-10-27 04:20:05,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:20:05,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:05,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:20:05,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:20:05,897 INFO L87 Difference]: Start difference. First operand 27118 states and 37574 transitions. Second operand 9 states. [2020-10-27 04:20:06,218 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:06,573 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:20:07,220 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-27 04:20:07,558 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:20:08,744 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:20:10,907 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 04:20:16,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:16,151 INFO L93 Difference]: Finished difference Result 81936 states and 116031 transitions. [2020-10-27 04:20:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:20:16,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 04:20:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:16,665 INFO L225 Difference]: With dead ends: 81936 [2020-10-27 04:20:16,666 INFO L226 Difference]: Without dead ends: 59718 [2020-10-27 04:20:16,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:20:16,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59718 states. [2020-10-27 04:20:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59718 to 59106. [2020-10-27 04:20:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59106 states. [2020-10-27 04:20:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59106 states to 59106 states and 81673 transitions. [2020-10-27 04:20:22,313 INFO L78 Accepts]: Start accepts. Automaton has 59106 states and 81673 transitions. Word has length 95 [2020-10-27 04:20:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:22,314 INFO L481 AbstractCegarLoop]: Abstraction has 59106 states and 81673 transitions. [2020-10-27 04:20:22,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:20:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 59106 states and 81673 transitions. [2020-10-27 04:20:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:20:22,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:22,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:22,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:20:22,380 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:22,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1388635167, now seen corresponding path program 1 times [2020-10-27 04:20:22,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:22,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513182113] [2020-10-27 04:20:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 04:20:27,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:20:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:20:27,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:20:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:20:27,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,743 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:27,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:27,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:27,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:27,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:20:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 04:20:27,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:20:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:20:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:20:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:27,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:27,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:27,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:20:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:27,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:20:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:20:27,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:27,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:20:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:28,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:20:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:28,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:20:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:28,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:28,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:28,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:28,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:20:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:28,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:28,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:28,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:28,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:28,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:28,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:28,077 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 04:20:28,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513182113] [2020-10-27 04:20:28,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:28,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:20:28,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955662822] [2020-10-27 04:20:28,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:20:28,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:28,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:20:28,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:20:28,078 INFO L87 Difference]: Start difference. First operand 59106 states and 81673 transitions. Second operand 8 states. [2020-10-27 04:20:28,472 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:20:28,801 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:20:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:32,435 INFO L93 Difference]: Finished difference Result 91019 states and 125724 transitions. [2020-10-27 04:20:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:20:32,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-27 04:20:32,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:32,544 INFO L225 Difference]: With dead ends: 91019 [2020-10-27 04:20:32,544 INFO L226 Difference]: Without dead ends: 33515 [2020-10-27 04:20:32,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:20:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33515 states. [2020-10-27 04:20:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33515 to 33147. [2020-10-27 04:20:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33147 states. [2020-10-27 04:20:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33147 states to 33147 states and 45598 transitions. [2020-10-27 04:20:35,757 INFO L78 Accepts]: Start accepts. Automaton has 33147 states and 45598 transitions. Word has length 96 [2020-10-27 04:20:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:35,757 INFO L481 AbstractCegarLoop]: Abstraction has 33147 states and 45598 transitions. [2020-10-27 04:20:35,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:20:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 33147 states and 45598 transitions. [2020-10-27 04:20:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:20:35,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:35,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:35,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:20:35,798 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:35,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:35,799 INFO L82 PathProgramCache]: Analyzing trace with hash 426337194, now seen corresponding path program 1 times [2020-10-27 04:20:35,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:35,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458603864] [2020-10-27 04:20:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:35,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:35,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:40,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 04:20:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:20:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:20:40,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:20:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:20:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 04:20:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:41,145 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:41,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:20:41,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:20:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:41,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:41,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:41,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:20:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-27 04:20:41,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:20:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:20:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:41,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:41,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:41,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:20:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:20:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:20:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:41,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:20:41,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:20:41,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:20:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:20:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:20:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:20:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:41,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:41,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:41,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:41,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:41,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:41,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:20:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:41,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:41,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:41,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:41,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:41,813 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 04:20:41,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458603864] [2020-10-27 04:20:41,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:41,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:20:41,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344063905] [2020-10-27 04:20:41,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:20:41,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:41,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:20:41,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:20:41,814 INFO L87 Difference]: Start difference. First operand 33147 states and 45598 transitions. Second operand 14 states. [2020-10-27 04:20:42,170 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:20:42,470 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:43,098 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:20:43,706 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:20:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:48,496 INFO L93 Difference]: Finished difference Result 47927 states and 66690 transitions. [2020-10-27 04:20:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:20:48,496 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-10-27 04:20:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:48,655 INFO L225 Difference]: With dead ends: 47927 [2020-10-27 04:20:48,655 INFO L226 Difference]: Without dead ends: 41469 [2020-10-27 04:20:48,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:20:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41469 states. [2020-10-27 04:20:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41469 to 37735. [2020-10-27 04:20:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37735 states. [2020-10-27 04:20:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37735 states to 37735 states and 52142 transitions. [2020-10-27 04:20:51,979 INFO L78 Accepts]: Start accepts. Automaton has 37735 states and 52142 transitions. Word has length 96 [2020-10-27 04:20:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:51,979 INFO L481 AbstractCegarLoop]: Abstraction has 37735 states and 52142 transitions. [2020-10-27 04:20:51,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:20:51,980 INFO L276 IsEmpty]: Start isEmpty. Operand 37735 states and 52142 transitions. [2020-10-27 04:20:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:20:52,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:52,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:52,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:20:52,019 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:52,019 INFO L82 PathProgramCache]: Analyzing trace with hash 292323688, now seen corresponding path program 1 times [2020-10-27 04:20:52,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:52,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255163375] [2020-10-27 04:20:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:52,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:20:57,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:57,365 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:57,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:20:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 04:20:57,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:20:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:20:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:20:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:57,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:57,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:57,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 04:20:57,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:20:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:57,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:20:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:57,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:57,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:57,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:57,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:20:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:20:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:57,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:20:57,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:20:57,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:20:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:57,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:57,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:20:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:57,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:57,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:57,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:57,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:20:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:57,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:57,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:57,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:57,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:57,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:57,668 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 04:20:57,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255163375] [2020-10-27 04:20:57,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:57,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:20:57,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181563558] [2020-10-27 04:20:57,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:20:57,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:57,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:20:57,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:20:57,670 INFO L87 Difference]: Start difference. First operand 37735 states and 52142 transitions. Second operand 8 states. [2020-10-27 04:20:58,023 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:20:58,377 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:21:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:21:01,192 INFO L93 Difference]: Finished difference Result 57863 states and 79783 transitions. [2020-10-27 04:21:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:21:01,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-27 04:21:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:21:01,254 INFO L225 Difference]: With dead ends: 57863 [2020-10-27 04:21:01,254 INFO L226 Difference]: Without dead ends: 20749 [2020-10-27 04:21:01,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:21:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20749 states. [2020-10-27 04:21:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20749 to 20333. [2020-10-27 04:21:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20333 states. [2020-10-27 04:21:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20333 states to 20333 states and 27953 transitions. [2020-10-27 04:21:02,873 INFO L78 Accepts]: Start accepts. Automaton has 20333 states and 27953 transitions. Word has length 96 [2020-10-27 04:21:02,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:21:02,874 INFO L481 AbstractCegarLoop]: Abstraction has 20333 states and 27953 transitions. [2020-10-27 04:21:02,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:21:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 20333 states and 27953 transitions. [2020-10-27 04:21:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:21:02,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:21:02,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:21:02,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:21:02,890 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:21:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:21:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1845057588, now seen corresponding path program 1 times [2020-10-27 04:21:02,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:21:02,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308026209] [2020-10-27 04:21:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:21:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:02,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:03,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:03,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:07,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:07,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 04:21:07,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:21:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:21:07,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:21:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:21:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 04:21:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:08,240 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:21:08,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:21:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:21:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:21:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-27 04:21:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:21:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:21:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:08,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:21:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:21:08,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:08,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:21:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:21:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:08,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:21:08,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:21:08,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:21:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:08,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:21:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:08,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:08,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:21:08,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:21:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:21:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:21:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:21:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:08,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:21:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:08,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:21:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:08,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:08,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:21:08,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:08,905 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 04:21:08,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308026209] [2020-10-27 04:21:08,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:21:08,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:21:08,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686729447] [2020-10-27 04:21:08,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:21:08,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:21:08,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:21:08,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:21:08,908 INFO L87 Difference]: Start difference. First operand 20333 states and 27953 transitions. Second operand 14 states. [2020-10-27 04:21:09,286 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:21:09,592 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:21:10,238 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:21:10,864 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:21:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:21:14,697 INFO L93 Difference]: Finished difference Result 29924 states and 41386 transitions. [2020-10-27 04:21:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:21:14,698 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-27 04:21:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:21:14,776 INFO L225 Difference]: With dead ends: 29924 [2020-10-27 04:21:14,776 INFO L226 Difference]: Without dead ends: 22885 [2020-10-27 04:21:14,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=246, Invalid=684, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:21:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22885 states. [2020-10-27 04:21:16,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22885 to 20267. [2020-10-27 04:21:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20267 states. [2020-10-27 04:21:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20267 states to 20267 states and 27666 transitions. [2020-10-27 04:21:16,499 INFO L78 Accepts]: Start accepts. Automaton has 20267 states and 27666 transitions. Word has length 97 [2020-10-27 04:21:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:21:16,499 INFO L481 AbstractCegarLoop]: Abstraction has 20267 states and 27666 transitions. [2020-10-27 04:21:16,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:21:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20267 states and 27666 transitions. [2020-10-27 04:21:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:21:16,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:21:16,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:21:16,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:21:16,517 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:21:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:21:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1704508978, now seen corresponding path program 1 times [2020-10-27 04:21:16,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:21:16,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491623040] [2020-10-27 04:21:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:21:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 04:21:21,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:21:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:21:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:21:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:21:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:21:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:21,860 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:21:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:21,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:21,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:21,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:21:21,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:21,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:21,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:21,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:21:21,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:21:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:21:21,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:21:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:21:21,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:21:21,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:22,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:21:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:22,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:22,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:21:22,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:21:22,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:21:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:22,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:21:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:22,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:22,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:21:22,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:21:22,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:21:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:21:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:22,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:22,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:21:22,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:22,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:22,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:22,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:22,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:21:22,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:22,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:22,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:21:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:22,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:22,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:22,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:22,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:22,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:22,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:22,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:22,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:22,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:21:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:22,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:21:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0