/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_opt-floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:39:45,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:39:45,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:39:45,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:39:45,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:39:45,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:39:45,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:39:45,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:39:45,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:39:45,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:39:45,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:39:45,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:39:45,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:39:45,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:39:45,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:39:45,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:39:45,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:39:45,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:39:45,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:39:45,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:39:45,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:39:45,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:39:45,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:39:45,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:39:45,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:39:45,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:39:45,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:39:45,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:39:45,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:39:45,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:39:45,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:39:45,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:39:45,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:39:45,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:39:45,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:39:45,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:39:45,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:39:45,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:39:45,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:39:45,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:39:45,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:39:45,482 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 04:39:45,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:39:45,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:39:45,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:39:45,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:39:45,537 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:39:45,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:39:45,538 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:39:45,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:39:45,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:39:45,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:39:45,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:39:45,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:39:45,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:39:45,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:39:45,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:39:45,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:39:45,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:39:45,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:39:45,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:39:45,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:39:45,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:39:45,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:39:45,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:39:45,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:39:45,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:39:45,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:39:45,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:39:45,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:39:45,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:39:45,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:39:45,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:39:46,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:39:46,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:39:46,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:39:46,024 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:39:46,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:39:46,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daa0d143/7a7a00423bd347fc91c6ee41d7a02160/FLAGe00c8b336 [2020-10-27 04:39:46,834 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:39:46,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:39:46,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daa0d143/7a7a00423bd347fc91c6ee41d7a02160/FLAGe00c8b336 [2020-10-27 04:39:47,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daa0d143/7a7a00423bd347fc91c6ee41d7a02160 [2020-10-27 04:39:47,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:39:47,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:39:47,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:39:47,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:39:47,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:39:47,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4901c8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47, skipping insertion in model container [2020-10-27 04:39:47,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:39:47,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:39:47,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:39:47,602 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:39:47,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:39:47,708 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:39:47,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47 WrapperNode [2020-10-27 04:39:47,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:39:47,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:39:47,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:39:47,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:39:47,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (1/1) ... [2020-10-27 04:39:47,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:39:47,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:39:47,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:39:47,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:39:47,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (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 04:39:47,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:39:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:39:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:39:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:39:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:39:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:39:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:39:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:39:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:39:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:39:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:39:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:39:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:39:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:39:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:39:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:39:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:39:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:39:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:39:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:39:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:39:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:39:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:39:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:39:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:39:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:39:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:39:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:39:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:39:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:39:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:39:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:39:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:39:48,853 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:39:48,854 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:39:48,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:39:48 BoogieIcfgContainer [2020-10-27 04:39:48,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:39:48,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:39:48,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:39:48,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:39:48,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:39:47" (1/3) ... [2020-10-27 04:39:48,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554ec6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:39:48, skipping insertion in model container [2020-10-27 04:39:48,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:47" (2/3) ... [2020-10-27 04:39:48,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554ec6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:39:48, skipping insertion in model container [2020-10-27 04:39:48,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:39:48" (3/3) ... [2020-10-27 04:39:48,866 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:39:48,881 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:39:48,887 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:39:48,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:39:48,959 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:39:48,959 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:39:48,959 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:39:48,959 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:39:48,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:39:48,960 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:39:48,960 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:39:48,960 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:39:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-10-27 04:39:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:39:48,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:48,997 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] [2020-10-27 04:39:48,998 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1937700257, now seen corresponding path program 1 times [2020-10-27 04:39:49,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:49,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396317784] [2020-10-27 04:39:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:39:49,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-27 04:39:49,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 04:39:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:39:50,183 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:50,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:50,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:39:50,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:50,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:39:50,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:39:50,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:39:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:50,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:50,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:39:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:39:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:50,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:50,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:50,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:39:50,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:39:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:50,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:50,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:39:50,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:39:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:50,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:50,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:50,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:39:50,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:50,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:50,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:39:50,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:50,535 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 04:39:50,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396317784] [2020-10-27 04:39:50,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:50,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:39:50,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077372268] [2020-10-27 04:39:50,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:39:50,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:50,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:39:50,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:39:50,563 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 6 states. [2020-10-27 04:39:52,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:52,038 INFO L93 Difference]: Finished difference Result 299 states and 471 transitions. [2020-10-27 04:39:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:39:52,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-27 04:39:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:52,051 INFO L225 Difference]: With dead ends: 299 [2020-10-27 04:39:52,051 INFO L226 Difference]: Without dead ends: 185 [2020-10-27 04:39:52,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:52,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-27 04:39:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 170. [2020-10-27 04:39:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-27 04:39:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 272 transitions. [2020-10-27 04:39:52,144 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 272 transitions. Word has length 66 [2020-10-27 04:39:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:52,144 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 272 transitions. [2020-10-27 04:39:52,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:39:52,145 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 272 transitions. [2020-10-27 04:39:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:39:52,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:52,149 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] [2020-10-27 04:39:52,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:39:52,149 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:52,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:52,150 INFO L82 PathProgramCache]: Analyzing trace with hash 92333091, now seen corresponding path program 1 times [2020-10-27 04:39:52,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:52,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902581518] [2020-10-27 04:39:52,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:53,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:39:53,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-27 04:39:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:39:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:39:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:39:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:39:53,551 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:53,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:53,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:53,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:39:53,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:53,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:53,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:39:53,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 04:39:53,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:39:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:39:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:53,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:53,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:53,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:39:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:53,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:39:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:53,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:53,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:53,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:39:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:53,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:53,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:53,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:53,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:39:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:53,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:53,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:53,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:53,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:53,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:53,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:53,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:53,897 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 04:39:53,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902581518] [2020-10-27 04:39:53,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:53,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:39:53,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138079451] [2020-10-27 04:39:53,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:39:53,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:53,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:39:53,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:39:53,901 INFO L87 Difference]: Start difference. First operand 170 states and 272 transitions. Second operand 12 states. [2020-10-27 04:39:54,612 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:55,023 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 04:39:55,484 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:39:55,852 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:57,966 INFO L93 Difference]: Finished difference Result 298 states and 469 transitions. [2020-10-27 04:39:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:39:57,967 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-27 04:39:57,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:57,974 INFO L225 Difference]: With dead ends: 298 [2020-10-27 04:39:57,975 INFO L226 Difference]: Without dead ends: 194 [2020-10-27 04:39:57,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:39:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-27 04:39:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 170. [2020-10-27 04:39:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-27 04:39:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 242 transitions. [2020-10-27 04:39:58,039 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 242 transitions. Word has length 66 [2020-10-27 04:39:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:58,040 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 242 transitions. [2020-10-27 04:39:58,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:39:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 242 transitions. [2020-10-27 04:39:58,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:39:58,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:58,049 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 04:39:58,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:39:58,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:58,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2007534636, now seen corresponding path program 1 times [2020-10-27 04:39:58,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:58,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248039505] [2020-10-27 04:39:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:58,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:00,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:03,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:40:03,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:40:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 04:40:03,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:40:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 04:40:03,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:40:03,466 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:03,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:03,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:03,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:40:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:03,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:03,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 04:40:03,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:40:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:03,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:03,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:03,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:03,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:03,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:40:03,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:03,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:40:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:03,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:03,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:40:03,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:03,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:40:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:03,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:03,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:03,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:40:03,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:40:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:03,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:03,803 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 04:40:03,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248039505] [2020-10-27 04:40:03,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:03,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:03,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739216763] [2020-10-27 04:40:03,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:03,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:03,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:03,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:03,806 INFO L87 Difference]: Start difference. First operand 170 states and 242 transitions. Second operand 9 states. [2020-10-27 04:40:04,112 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:06,201 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:06,744 INFO L93 Difference]: Finished difference Result 397 states and 594 transitions. [2020-10-27 04:40:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:40:06,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 04:40:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:06,750 INFO L225 Difference]: With dead ends: 397 [2020-10-27 04:40:06,750 INFO L226 Difference]: Without dead ends: 299 [2020-10-27 04:40:06,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:40:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-27 04:40:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 260. [2020-10-27 04:40:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-27 04:40:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 375 transitions. [2020-10-27 04:40:06,803 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 375 transitions. Word has length 95 [2020-10-27 04:40:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:06,804 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 375 transitions. [2020-10-27 04:40:06,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 375 transitions. [2020-10-27 04:40:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:40:06,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:06,808 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 04:40:06,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:40:06,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:06,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:06,809 INFO L82 PathProgramCache]: Analyzing trace with hash -970540897, now seen corresponding path program 1 times [2020-10-27 04:40:06,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:06,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688705242] [2020-10-27 04:40:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:07,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 04:40:11,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:11,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:40:11,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:40:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:12,232 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:12,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:12,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:12,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:12,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:40:12,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:12,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:12,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:12,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:12,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:12,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 04:40:12,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:12,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:12,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:12,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:12,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:12,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:12,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:12,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:12,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:40:12,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:12,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:40:12,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:40:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:12,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:40:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:12,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:12,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:12,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:40:12,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:12,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:40:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:12,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:12,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:12,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:12,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:40:12,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:40:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:12,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:12,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:12,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:12,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:12,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:12,661 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 04:40:12,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688705242] [2020-10-27 04:40:12,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:12,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:12,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568250341] [2020-10-27 04:40:12,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:12,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:12,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:12,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:12,666 INFO L87 Difference]: Start difference. First operand 260 states and 375 transitions. Second operand 9 states. [2020-10-27 04:40:13,009 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:13,309 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:13,644 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:13,981 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:15,052 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:17,885 INFO L93 Difference]: Finished difference Result 802 states and 1173 transitions. [2020-10-27 04:40:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:40:17,886 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-27 04:40:17,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:17,890 INFO L225 Difference]: With dead ends: 802 [2020-10-27 04:40:17,891 INFO L226 Difference]: Without dead ends: 555 [2020-10-27 04:40:17,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:40:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-10-27 04:40:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 498. [2020-10-27 04:40:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-27 04:40:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 707 transitions. [2020-10-27 04:40:17,964 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 707 transitions. Word has length 97 [2020-10-27 04:40:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:17,965 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 707 transitions. [2020-10-27 04:40:17,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 707 transitions. [2020-10-27 04:40:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:40:17,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:17,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:17,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:40:17,970 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:17,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:17,971 INFO L82 PathProgramCache]: Analyzing trace with hash -828798199, now seen corresponding path program 1 times [2020-10-27 04:40:17,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:17,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493093317] [2020-10-27 04:40:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:18,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:23,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:40:23,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:40:23,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:40:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:23,376 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:23,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:23,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:23,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:23,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:23,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:23,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 04:40:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:40:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:23,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:23,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:23,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:23,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:23,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:40:23,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:23,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:23,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:23,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:23,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:23,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:23,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:23,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:40:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:40:23,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:40:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:23,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:23,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:23,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:23,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:23,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:23,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:40:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:23,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:23,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:23,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:23,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:23,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:23,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:23,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:40:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:23,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:23,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:23,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:23,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:23,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:23,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:23,762 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 04:40:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493093317] [2020-10-27 04:40:23,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:23,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:23,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909270079] [2020-10-27 04:40:23,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:23,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:23,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:23,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:23,765 INFO L87 Difference]: Start difference. First operand 498 states and 707 transitions. Second operand 9 states. [2020-10-27 04:40:24,114 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:24,426 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:24,819 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:25,171 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:26,102 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:28,973 INFO L93 Difference]: Finished difference Result 1510 states and 2159 transitions. [2020-10-27 04:40:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:40:28,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-27 04:40:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:28,983 INFO L225 Difference]: With dead ends: 1510 [2020-10-27 04:40:28,983 INFO L226 Difference]: Without dead ends: 1045 [2020-10-27 04:40:28,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:40:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-27 04:40:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 950. [2020-10-27 04:40:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-10-27 04:40:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1327 transitions. [2020-10-27 04:40:29,085 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1327 transitions. Word has length 98 [2020-10-27 04:40:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:29,085 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1327 transitions. [2020-10-27 04:40:29,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1327 transitions. [2020-10-27 04:40:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:40:29,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:29,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:29,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:40:29,090 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:29,090 INFO L82 PathProgramCache]: Analyzing trace with hash -218399575, now seen corresponding path program 1 times [2020-10-27 04:40:29,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:29,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549703828] [2020-10-27 04:40:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:34,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:34,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:40:34,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:34,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:40:34,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:40:34,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:34,530 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:34,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:34,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:40:34,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:34,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:34,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:34,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:34,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 04:40:34,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:34,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:40:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:34,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:34,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:34,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:40:34,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:34,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:34,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:34,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:34,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:40:34,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:40:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:40:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:40:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:34,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:34,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:34,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:35,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:40:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:35,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:35,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:35,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:35,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:40:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:35,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:35,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:35,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:35,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:35,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:35,112 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 04:40:35,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549703828] [2020-10-27 04:40:35,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:35,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:35,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213137778] [2020-10-27 04:40:35,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:35,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:35,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:35,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:35,118 INFO L87 Difference]: Start difference. First operand 950 states and 1327 transitions. Second operand 9 states. [2020-10-27 04:40:35,457 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:35,803 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:40:36,156 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:40:37,174 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-27 04:40:37,978 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:41,700 INFO L93 Difference]: Finished difference Result 3444 states and 4835 transitions. [2020-10-27 04:40:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:40:41,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-27 04:40:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:41,725 INFO L225 Difference]: With dead ends: 3444 [2020-10-27 04:40:41,725 INFO L226 Difference]: Without dead ends: 2567 [2020-10-27 04:40:41,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:40:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-10-27 04:40:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2369. [2020-10-27 04:40:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2369 states. [2020-10-27 04:40:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 3255 transitions. [2020-10-27 04:40:41,980 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 3255 transitions. Word has length 98 [2020-10-27 04:40:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:41,982 INFO L481 AbstractCegarLoop]: Abstraction has 2369 states and 3255 transitions. [2020-10-27 04:40:41,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:41,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 3255 transitions. [2020-10-27 04:40:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:40:41,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:41,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:41,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:40:41,990 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash 903064119, now seen corresponding path program 1 times [2020-10-27 04:40:41,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:41,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231035246] [2020-10-27 04:40:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:47,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:47,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:40:47,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:47,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 04:40:47,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:40:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:40:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 04:40:47,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:47,374 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:47,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:47,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:47,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:47,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:47,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:40:47,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:40:47,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:47,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:47,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:47,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:40:47,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:40:47,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:47,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:47,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:47,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:47,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:47,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:47,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:47,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:47,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:47,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:47,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:47,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:40:47,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:40:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:40:47,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:47,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:47,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:47,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:47,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:40:47,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:40:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:47,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:47,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:47,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:47,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:47,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:47,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:47,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:47,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:47,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:40:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:47,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:47,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:47,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:47,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:47,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:47,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:47,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:47,869 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 04:40:47,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231035246] [2020-10-27 04:40:47,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:47,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:40:47,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118483158] [2020-10-27 04:40:47,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:40:47,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:47,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:40:47,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:40:47,879 INFO L87 Difference]: Start difference. First operand 2369 states and 3255 transitions. Second operand 14 states. [2020-10-27 04:40:48,284 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:48,630 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:49,306 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:40:49,960 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:53,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:53,095 INFO L93 Difference]: Finished difference Result 4569 states and 6545 transitions. [2020-10-27 04:40:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:40:53,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-10-27 04:40:53,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:53,120 INFO L225 Difference]: With dead ends: 4569 [2020-10-27 04:40:53,121 INFO L226 Difference]: Without dead ends: 4011 [2020-10-27 04:40:53,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:40:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2020-10-27 04:40:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2627. [2020-10-27 04:40:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2627 states. [2020-10-27 04:40:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3615 transitions. [2020-10-27 04:40:53,381 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3615 transitions. Word has length 99 [2020-10-27 04:40:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:53,381 INFO L481 AbstractCegarLoop]: Abstraction has 2627 states and 3615 transitions. [2020-10-27 04:40:53,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:40:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3615 transitions. [2020-10-27 04:40:53,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:40:53,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:53,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:53,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:40:53,389 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:53,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1340919179, now seen corresponding path program 1 times [2020-10-27 04:40:53,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:53,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567858812] [2020-10-27 04:40:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:40:58,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:40:58,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:40:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,739 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:58,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:58,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:40:58,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:58,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:40:58,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:58,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:58,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:58,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:58,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:58,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:40:58,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:40:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:40:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:58,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:40:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:59,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:40:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:59,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:59,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:59,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:59,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:59,077 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 04:40:59,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567858812] [2020-10-27 04:40:59,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:59,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:59,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599294937] [2020-10-27 04:40:59,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:59,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:59,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:59,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:59,080 INFO L87 Difference]: Start difference. First operand 2627 states and 3615 transitions. Second operand 9 states. [2020-10-27 04:40:59,380 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:59,721 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:41:00,189 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:41:00,839 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:41:01,833 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:05,081 INFO L93 Difference]: Finished difference Result 8266 states and 11585 transitions. [2020-10-27 04:41:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:41:05,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 04:41:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:05,114 INFO L225 Difference]: With dead ends: 8266 [2020-10-27 04:41:05,114 INFO L226 Difference]: Without dead ends: 6085 [2020-10-27 04:41:05,123 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 04:41:05,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6085 states. [2020-10-27 04:41:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 5689. [2020-10-27 04:41:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5689 states. [2020-10-27 04:41:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 7751 transitions. [2020-10-27 04:41:05,662 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 7751 transitions. Word has length 99 [2020-10-27 04:41:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:05,662 INFO L481 AbstractCegarLoop]: Abstraction has 5689 states and 7751 transitions. [2020-10-27 04:41:05,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 7751 transitions. [2020-10-27 04:41:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:41:05,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:05,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:41:05,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:41:05,677 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:05,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:05,677 INFO L82 PathProgramCache]: Analyzing trace with hash -208840796, now seen corresponding path program 1 times [2020-10-27 04:41:05,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:05,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031287880] [2020-10-27 04:41:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:06,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:10,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:10,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:41:10,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:41:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:41:10,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:41:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:41:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:11,059 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:11,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:11,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:41:11,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:11,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:11,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:11,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:41:11,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:41:11,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:41:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:11,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:41:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:11,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:11,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:41:11,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:11,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:41:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:41:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:11,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:11,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:41:11,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:41:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:41:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:41:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:11,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:11,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:41:11,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:11,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:41:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:11,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:11,373 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 04:41:11,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031287880] [2020-10-27 04:41:11,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:11,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:11,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174580467] [2020-10-27 04:41:11,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:11,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:11,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:11,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:11,375 INFO L87 Difference]: Start difference. First operand 5689 states and 7751 transitions. Second operand 9 states. [2020-10-27 04:41:11,765 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:41:14,795 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:41:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:15,104 INFO L93 Difference]: Finished difference Result 13639 states and 19147 transitions. [2020-10-27 04:41:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:41:15,109 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 04:41:15,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:15,158 INFO L225 Difference]: With dead ends: 13639 [2020-10-27 04:41:15,158 INFO L226 Difference]: Without dead ends: 9628 [2020-10-27 04:41:15,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:41:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9628 states. [2020-10-27 04:41:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 8789. [2020-10-27 04:41:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8789 states. [2020-10-27 04:41:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8789 states to 8789 states and 12099 transitions. [2020-10-27 04:41:16,030 INFO L78 Accepts]: Start accepts. Automaton has 8789 states and 12099 transitions. Word has length 99 [2020-10-27 04:41:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:16,031 INFO L481 AbstractCegarLoop]: Abstraction has 8789 states and 12099 transitions. [2020-10-27 04:41:16,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 8789 states and 12099 transitions. [2020-10-27 04:41:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:41:16,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:16,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:41:16,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:41:16,051 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:16,052 INFO L82 PathProgramCache]: Analyzing trace with hash 861785409, now seen corresponding path program 1 times [2020-10-27 04:41:16,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:16,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349651863] [2020-10-27 04:41:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:16,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:21,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 04:41:21,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:41:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:41:21,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:21,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:41:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:41:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:21,432 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:21,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:21,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:21,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:21,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:21,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:41:21,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:21,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:21,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:21,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:41:21,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:21,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:41:21,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:21,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:21,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:21,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:41:21,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:41:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:41:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:21,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:41:21,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:21,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:41:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:21,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:21,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:21,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:21,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:41:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:21,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:41:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:21,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:21,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:21,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:41:21,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:21,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:41:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:21,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:21,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:21,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:21,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:21,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:21,773 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 04:41:21,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349651863] [2020-10-27 04:41:21,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:21,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:21,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39349357] [2020-10-27 04:41:21,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:21,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:21,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:21,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:21,775 INFO L87 Difference]: Start difference. First operand 8789 states and 12099 transitions. Second operand 9 states. [2020-10-27 04:41:22,144 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:41:22,516 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:41:22,968 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:41:23,645 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-27 04:41:24,885 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:29,427 INFO L93 Difference]: Finished difference Result 29418 states and 41420 transitions. [2020-10-27 04:41:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:41:29,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-27 04:41:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:29,571 INFO L225 Difference]: With dead ends: 29418 [2020-10-27 04:41:29,571 INFO L226 Difference]: Without dead ends: 21959 [2020-10-27 04:41:29,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:41:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21959 states. [2020-10-27 04:41:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21959 to 20460. [2020-10-27 04:41:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20460 states. [2020-10-27 04:41:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20460 states to 20460 states and 28033 transitions. [2020-10-27 04:41:31,360 INFO L78 Accepts]: Start accepts. Automaton has 20460 states and 28033 transitions. Word has length 102 [2020-10-27 04:41:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:31,360 INFO L481 AbstractCegarLoop]: Abstraction has 20460 states and 28033 transitions. [2020-10-27 04:41:31,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 20460 states and 28033 transitions. [2020-10-27 04:41:31,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:41:31,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:31,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:41:31,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:41:31,397 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:31,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:31,397 INFO L82 PathProgramCache]: Analyzing trace with hash 502046901, now seen corresponding path program 1 times [2020-10-27 04:41:31,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:31,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781326907] [2020-10-27 04:41:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:31,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:34,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:36,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:36,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 04:41:36,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:41:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:41:36,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:41:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 04:41:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:36,754 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:36,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:36,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:41:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:41:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:37,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:37,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:37,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:37,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:37,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:41:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:37,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:37,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:41:37,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:41:37,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:41:37,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:41:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:37,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:37,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:37,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:37,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:41:37,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:41:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:41:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:37,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:41:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:37,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:37,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:37,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:41:37,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:41:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:37,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:37,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:37,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:37,286 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 04:41:37,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781326907] [2020-10-27 04:41:37,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:37,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:37,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22264393] [2020-10-27 04:41:37,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:37,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:37,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:37,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:37,289 INFO L87 Difference]: Start difference. First operand 20460 states and 28033 transitions. Second operand 9 states. [2020-10-27 04:41:37,636 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:41:37,952 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:41:38,346 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:38,689 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:41:39,724 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:45,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:45,359 INFO L93 Difference]: Finished difference Result 62009 states and 85817 transitions. [2020-10-27 04:41:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:41:45,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-27 04:41:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:45,545 INFO L225 Difference]: With dead ends: 62009 [2020-10-27 04:41:45,545 INFO L226 Difference]: Without dead ends: 41983 [2020-10-27 04:41:45,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:41:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41983 states. [2020-10-27 04:41:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41983 to 39520. [2020-10-27 04:41:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39520 states. [2020-10-27 04:41:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39520 states to 39520 states and 53333 transitions. [2020-10-27 04:41:49,245 INFO L78 Accepts]: Start accepts. Automaton has 39520 states and 53333 transitions. Word has length 102 [2020-10-27 04:41:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:49,245 INFO L481 AbstractCegarLoop]: Abstraction has 39520 states and 53333 transitions. [2020-10-27 04:41:49,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 39520 states and 53333 transitions. [2020-10-27 04:41:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 04:41:49,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:49,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:41:49,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:41:49,312 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:49,312 INFO L82 PathProgramCache]: Analyzing trace with hash -591650540, now seen corresponding path program 1 times [2020-10-27 04:41:49,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:49,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971038213] [2020-10-27 04:41:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:49,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:54,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:41:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:41:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:41:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 04:41:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:41:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:54,657 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:54,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:54,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:54,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:41:54,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:41:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:41:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:41:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:54,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:54,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:54,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:54,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:54,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:41:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:54,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:54,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:41:54,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:41:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:54,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:54,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:54,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:41:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:41:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:41:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:54,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 04:41:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:54,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:54,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:54,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:41:54,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971038213] [2020-10-27 04:41:54,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:54,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:54,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442339068] [2020-10-27 04:41:54,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:54,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:54,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:54,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:54,915 INFO L87 Difference]: Start difference. First operand 39520 states and 53333 transitions. Second operand 9 states. [2020-10-27 04:41:55,235 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:42:01,049 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:42:02,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:02,376 INFO L93 Difference]: Finished difference Result 98834 states and 134561 transitions. [2020-10-27 04:42:02,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:42:02,376 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-27 04:42:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:02,606 INFO L225 Difference]: With dead ends: 98834 [2020-10-27 04:42:02,606 INFO L226 Difference]: Without dead ends: 65727 [2020-10-27 04:42:02,684 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 04:42:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65727 states. [2020-10-27 04:42:07,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65727 to 61016. [2020-10-27 04:42:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61016 states. [2020-10-27 04:42:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61016 states to 61016 states and 82179 transitions. [2020-10-27 04:42:07,989 INFO L78 Accepts]: Start accepts. Automaton has 61016 states and 82179 transitions. Word has length 103 [2020-10-27 04:42:07,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:07,989 INFO L481 AbstractCegarLoop]: Abstraction has 61016 states and 82179 transitions. [2020-10-27 04:42:07,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:42:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand 61016 states and 82179 transitions. [2020-10-27 04:42:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:42:08,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:08,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:42:08,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:42:08,027 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1338688805, now seen corresponding path program 1 times [2020-10-27 04:42:08,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:08,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574843602] [2020-10-27 04:42:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:08,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:13,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:42:13,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:42:13,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:42:13,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:42:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:42:13,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:13,381 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:42:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:13,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:13,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:13,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:13,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:42:13,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:13,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:13,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:14,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:42:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:42:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-27 04:42:14,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:42:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:42:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:42:14,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:14,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:42:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:14,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:14,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:42:14,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:42:14,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:42:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:42:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:42:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:42:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:14,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:14,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:42:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:42:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:42:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:14,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:42:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:14,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:14,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:42:14,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:14,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:42:14,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:42:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:14,260 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 04:42:14,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574843602] [2020-10-27 04:42:14,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:42:14,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:42:14,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254753652] [2020-10-27 04:42:14,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:42:14,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:42:14,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:42:14,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:42:14,262 INFO L87 Difference]: Start difference. First operand 61016 states and 82179 transitions. Second operand 9 states. [2020-10-27 04:42:14,631 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:42:14,966 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:42:15,383 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:42:15,730 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:42:16,625 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:42:22,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:22,559 INFO L93 Difference]: Finished difference Result 90476 states and 121645 transitions. [2020-10-27 04:42:22,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:42:22,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 04:42:22,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:22,815 INFO L225 Difference]: With dead ends: 90476 [2020-10-27 04:42:22,815 INFO L226 Difference]: Without dead ends: 63169 [2020-10-27 04:42:22,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:42:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63169 states. [2020-10-27 04:42:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63169 to 58342. [2020-10-27 04:42:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58342 states. [2020-10-27 04:42:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58342 states to 58342 states and 78275 transitions. [2020-10-27 04:42:27,818 INFO L78 Accepts]: Start accepts. Automaton has 58342 states and 78275 transitions. Word has length 106 [2020-10-27 04:42:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:27,819 INFO L481 AbstractCegarLoop]: Abstraction has 58342 states and 78275 transitions. [2020-10-27 04:42:27,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:42:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 58342 states and 78275 transitions. [2020-10-27 04:42:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:42:28,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:28,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:42:28,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:42:28,074 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:28,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:28,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1117368527, now seen corresponding path program 1 times [2020-10-27 04:42:28,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:28,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057944914] [2020-10-27 04:42:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:28,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:28,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:28,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:28,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:33,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:42:33,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:42:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:42:33,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:42:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:42:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:33,439 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:42:33,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:33,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:33,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:33,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:33,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:42:33,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:33,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:34,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:34,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:42:34,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:42:34,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-27 04:42:34,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:42:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:42:34,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:42:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:34,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:34,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:42:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:42:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:42:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:34,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:42:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:34,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:34,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:42:34,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:34,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:42:34,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:42:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:34,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:42:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:34,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:34,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:42:34,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:42:34,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:42:34,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:42:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:34,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:34,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:42:34,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:34,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:42:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:42:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:34,428 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 04:42:34,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057944914] [2020-10-27 04:42:34,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:42:34,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:42:34,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795417714] [2020-10-27 04:42:34,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:42:34,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:42:34,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:42:34,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:42:34,430 INFO L87 Difference]: Start difference. First operand 58342 states and 78275 transitions. Second operand 8 states. [2020-10-27 04:42:34,895 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:42:35,272 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:42:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:39,212 INFO L93 Difference]: Finished difference Result 61341 states and 82053 transitions. [2020-10-27 04:42:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:42:39,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-27 04:42:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:39,369 INFO L225 Difference]: With dead ends: 61341 [2020-10-27 04:42:39,369 INFO L226 Difference]: Without dead ends: 39847 [2020-10-27 04:42:39,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:42:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39847 states. [2020-10-27 04:42:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39847 to 36850. [2020-10-27 04:42:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36850 states. [2020-10-27 04:42:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36850 states to 36850 states and 49710 transitions. [2020-10-27 04:42:42,299 INFO L78 Accepts]: Start accepts. Automaton has 36850 states and 49710 transitions. Word has length 106 [2020-10-27 04:42:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:42,300 INFO L481 AbstractCegarLoop]: Abstraction has 36850 states and 49710 transitions. [2020-10-27 04:42:42,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:42:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 36850 states and 49710 transitions. [2020-10-27 04:42:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:42:42,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:42,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:42:42,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:42:42,324 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1797306292, now seen corresponding path program 1 times [2020-10-27 04:42:42,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:42,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566462687] [2020-10-27 04:42:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:42,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:42,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:47,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:47,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:42:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:42:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:42:47,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:42:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:42:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:47,675 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:42:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:47,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:47,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:47,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:42:47,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:47,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:47,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:48,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:42:48,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:42:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-27 04:42:48,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:42:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:42:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:42:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:48,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:48,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:42:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:42:48,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:42:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:48,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:42:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:48,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:48,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:42:48,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:42:48,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:42:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:48,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:42:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:48,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:42:48,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:42:48,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:42:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:48,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:42:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:48,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:48,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:42:48,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:48,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:42:48,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:48,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:48,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:42:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:48,643 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 04:42:48,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566462687] [2020-10-27 04:42:48,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:42:48,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:42:48,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775457028] [2020-10-27 04:42:48,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:42:48,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:42:48,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:42:48,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:42:48,645 INFO L87 Difference]: Start difference. First operand 36850 states and 49710 transitions. Second operand 8 states. [2020-10-27 04:42:49,027 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:42:49,402 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:42:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:52,517 INFO L93 Difference]: Finished difference Result 51483 states and 69255 transitions. [2020-10-27 04:42:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:42:52,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-27 04:42:52,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:52,601 INFO L225 Difference]: With dead ends: 51483 [2020-10-27 04:42:52,602 INFO L226 Difference]: Without dead ends: 24382 [2020-10-27 04:42:52,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:42:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24382 states. [2020-10-27 04:42:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24382 to 22262. [2020-10-27 04:42:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22262 states. [2020-10-27 04:42:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22262 states to 22262 states and 30096 transitions. [2020-10-27 04:42:54,477 INFO L78 Accepts]: Start accepts. Automaton has 22262 states and 30096 transitions. Word has length 106 [2020-10-27 04:42:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:54,477 INFO L481 AbstractCegarLoop]: Abstraction has 22262 states and 30096 transitions. [2020-10-27 04:42:54,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:42:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 22262 states and 30096 transitions. [2020-10-27 04:42:54,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 04:42:54,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:54,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:42:54,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:42:54,491 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:54,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1498874999, now seen corresponding path program 1 times [2020-10-27 04:42:54,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:54,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314125855] [2020-10-27 04:42:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:54,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:59,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:59,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:42:59,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:42:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:42:59,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:42:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:42:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 04:42:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:59,880 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:42:59,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:59,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:59,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:59,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:42:59,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:42:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:00,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:00,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 04:43:00,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:43:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-27 04:43:00,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:43:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:43:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:43:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:43:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:43:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:00,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:00,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:43:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:43:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:43:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:43:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:00,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:43:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:00,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:43:00,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:00,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:43:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:00,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:00,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:43:00,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:00,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:43:00,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:43:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:43:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:00,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:00,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:43:00,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:43:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:43:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:00,543 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 04:43:00,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314125855] [2020-10-27 04:43:00,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:43:00,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:43:00,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739416020] [2020-10-27 04:43:00,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:43:00,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:43:00,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:43:00,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:43:00,546 INFO L87 Difference]: Start difference. First operand 22262 states and 30096 transitions. Second operand 14 states. [2020-10-27 04:43:00,956 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:43:01,306 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:43:01,927 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:43:02,566 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:43:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:43:07,212 INFO L93 Difference]: Finished difference Result 38814 states and 52368 transitions. [2020-10-27 04:43:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:43:07,213 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 107 [2020-10-27 04:43:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:43:07,437 INFO L225 Difference]: With dead ends: 38814 [2020-10-27 04:43:07,438 INFO L226 Difference]: Without dead ends: 30090 [2020-10-27 04:43:07,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:43:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30090 states. [2020-10-27 04:43:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30090 to 25305. [2020-10-27 04:43:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25305 states. [2020-10-27 04:43:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25305 states to 25305 states and 34071 transitions. [2020-10-27 04:43:09,344 INFO L78 Accepts]: Start accepts. Automaton has 25305 states and 34071 transitions. Word has length 107 [2020-10-27 04:43:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:43:09,345 INFO L481 AbstractCegarLoop]: Abstraction has 25305 states and 34071 transitions. [2020-10-27 04:43:09,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:43:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 25305 states and 34071 transitions. [2020-10-27 04:43:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 04:43:09,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:43:09,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:43:09,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:43:09,360 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:43:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:43:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash -112671605, now seen corresponding path program 1 times [2020-10-27 04:43:09,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:43:09,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662624286] [2020-10-27 04:43:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:43:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:43:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:14,711 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:43:14,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:43:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:14,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:14,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:43:14,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:43:14,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:14,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:14,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:43:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:43:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:43:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:14,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:14,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:43:14,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 04:43:14,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:43:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:14,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:43:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:14,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:14,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:43:14,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:14,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:43:14,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:14,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:43:14,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:14,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:43:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:14,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:14,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:43:14,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:43:14,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:43:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:15,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:43:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:15,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:15,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:43:15,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:15,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:43:15,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:43:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:43:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:15,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:15,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:43:15,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:15,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:43:15,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:43:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:15,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:15,061 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 04:43:15,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662624286] [2020-10-27 04:43:15,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:43:15,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:43:15,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130708306] [2020-10-27 04:43:15,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:43:15,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:43:15,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:43:15,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:43:15,063 INFO L87 Difference]: Start difference. First operand 25305 states and 34071 transitions. Second operand 8 states. [2020-10-27 04:43:15,583 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:43:15,933 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 193