/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/forester-heap/sll-queue-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:11:00,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:11:00,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:11:00,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:11:00,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:11:00,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:11:00,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:11:00,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:11:00,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:11:00,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:11:00,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:11:00,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:11:00,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:11:00,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:11:00,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:11:00,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:11:00,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:11:00,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:11:00,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:11:00,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:11:00,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:11:00,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:11:00,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:11:00,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:11:00,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:11:00,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:11:00,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:11:00,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:11:00,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:11:00,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:11:00,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:11:00,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:11:00,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:11:00,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:11:00,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:11:00,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:11:00,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:11:00,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:11:00,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:11:00,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:11:00,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:11:00,412 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 [2020-10-29 09:11:00,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:11:00,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:11:00,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:11:00,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:11:00,468 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:11:00,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:11:00,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:11:00,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:11:00,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:11:00,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:11:00,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:11:00,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:11:00,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:11:00,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:11:00,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:11:00,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:11:00,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:11:00,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:11:00,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:11:00,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:11:00,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:11:00,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:11:00,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:11:00,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:11:00,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:11:00,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:11:00,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:11:00,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:11:00,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:11:00,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:11:00,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:11:00,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:11:00,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:11:00,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:11:00,949 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:11:00,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-queue-1.i [2020-10-29 09:11:01,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ba6740cd/3b0b4abf5da244399484e61a3aec93b6/FLAG98e31b338 [2020-10-29 09:11:01,679 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:11:01,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-queue-1.i [2020-10-29 09:11:01,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ba6740cd/3b0b4abf5da244399484e61a3aec93b6/FLAG98e31b338 [2020-10-29 09:11:01,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ba6740cd/3b0b4abf5da244399484e61a3aec93b6 [2020-10-29 09:11:01,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:11:01,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:11:01,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:11:01,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:11:01,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:11:01,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:11:01" (1/1) ... [2020-10-29 09:11:01,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bc2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:01, skipping insertion in model container [2020-10-29 09:11:01,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:11:01" (1/1) ... [2020-10-29 09:11:01,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:11:02,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:11:02,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:11:02,498 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:11:02,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:11:02,685 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:11:02,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02 WrapperNode [2020-10-29 09:11:02,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:11:02,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:11:02,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:11:02,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:11:02,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (1/1) ... [2020-10-29 09:11:02,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (1/1) ... [2020-10-29 09:11:02,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (1/1) ... [2020-10-29 09:11:02,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (1/1) ... [2020-10-29 09:11:02,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (1/1) ... [2020-10-29 09:11:02,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (1/1) ... [2020-10-29 09:11:02,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (1/1) ... [2020-10-29 09:11:02,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:11:02,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:11:02,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:11:02,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:11:02,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (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 [2020-10-29 09:11:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:11:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:11:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:11:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:11:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:11:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:11:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:11:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:11:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:11:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:11:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:11:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:11:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:11:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:11:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:11:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:11:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:11:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:11:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:11:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:11:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:11:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:11:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:11:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:11:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:11:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:11:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:11:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:11:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:11:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:11:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:11:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:11:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:11:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:11:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:11:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:11:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:11:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:11:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:11:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:11:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:11:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:11:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:11:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:11:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:11:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:11:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:11:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:11:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:11:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:11:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:11:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:11:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:11:02,936 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:11:02,936 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:11:02,937 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:11:02,937 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:11:02,937 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:11:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:11:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:11:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:11:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:11:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:11:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:11:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:11:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:11:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:11:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:11:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:11:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:11:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:11:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:11:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:11:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:11:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:11:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:11:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:11:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:11:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:11:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:11:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:11:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:11:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:11:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:11:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:11:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:11:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:11:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:11:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:11:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:11:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:11:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:11:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:11:03,789 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:11:03,789 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-29 09:11:03,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:11:03 BoogieIcfgContainer [2020-10-29 09:11:03,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:11:03,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:11:03,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:11:03,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:11:03,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:11:01" (1/3) ... [2020-10-29 09:11:03,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efba57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:11:03, skipping insertion in model container [2020-10-29 09:11:03,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:11:02" (2/3) ... [2020-10-29 09:11:03,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efba57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:11:03, skipping insertion in model container [2020-10-29 09:11:03,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:11:03" (3/3) ... [2020-10-29 09:11:03,802 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2020-10-29 09:11:03,815 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:11:03,821 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:11:03,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:11:03,865 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:11:03,866 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:11:03,866 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:11:03,866 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:11:03,866 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:11:03,866 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:11:03,867 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:11:03,867 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:11:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-10-29 09:11:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-29 09:11:03,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:03,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:03,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:03,906 INFO L82 PathProgramCache]: Analyzing trace with hash 218866609, now seen corresponding path program 1 times [2020-10-29 09:11:03,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:03,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700571924] [2020-10-29 09:11:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:04,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:04,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:04,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:11:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 09:11:04,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:04,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:11:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:11:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:11:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:04,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:04,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:04,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:11:04,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:04,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:04,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700571924] [2020-10-29 09:11:04,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:11:04,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:11:04,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666326921] [2020-10-29 09:11:04,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:11:04,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:11:04,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:04,568 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-10-29 09:11:04,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:04,891 INFO L93 Difference]: Finished difference Result 164 states and 300 transitions. [2020-10-29 09:11:04,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:11:04,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-29 09:11:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:04,905 INFO L225 Difference]: With dead ends: 164 [2020-10-29 09:11:04,905 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 09:11:04,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 09:11:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-29 09:11:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 09:11:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2020-10-29 09:11:04,966 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 11 [2020-10-29 09:11:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:04,966 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2020-10-29 09:11:04,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:11:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2020-10-29 09:11:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:11:04,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:04,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:04,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:11:04,969 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:04,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:04,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1246734287, now seen corresponding path program 1 times [2020-10-29 09:11:04,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:04,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872124903] [2020-10-29 09:11:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:05,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:05,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:11:05,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 09:11:05,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:05,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:11:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:11:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:11:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:05,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:05,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:05,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:05,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:11:05,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:05,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:05,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872124903] [2020-10-29 09:11:05,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:11:05,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:11:05,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285468033] [2020-10-29 09:11:05,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:11:05,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:05,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:11:05,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:05,293 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 4 states. [2020-10-29 09:11:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:05,474 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2020-10-29 09:11:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:11:05,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 09:11:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:05,477 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:11:05,477 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:11:05,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:05,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:11:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 09:11:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:11:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2020-10-29 09:11:05,491 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 15 [2020-10-29 09:11:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:05,492 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2020-10-29 09:11:05,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:11:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2020-10-29 09:11:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:11:05,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:05,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:05,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:11:05,494 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:05,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:05,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1069993799, now seen corresponding path program 1 times [2020-10-29 09:11:05,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:05,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884592126] [2020-10-29 09:11:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:05,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:05,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:11:05,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 09:11:05,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:05,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:11:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:11:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:05,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:05,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:11:05,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:05,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:05,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:05,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884592126] [2020-10-29 09:11:05,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:11:05,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:11:05,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862128213] [2020-10-29 09:11:05,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:11:05,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:05,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:11:05,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:05,670 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand 4 states. [2020-10-29 09:11:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:05,885 INFO L93 Difference]: Finished difference Result 146 states and 186 transitions. [2020-10-29 09:11:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:11:05,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-29 09:11:05,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:05,887 INFO L225 Difference]: With dead ends: 146 [2020-10-29 09:11:05,887 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 09:11:05,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 09:11:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-10-29 09:11:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 09:11:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-10-29 09:11:05,916 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 18 [2020-10-29 09:11:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:05,916 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-10-29 09:11:05,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:11:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-10-29 09:11:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:11:05,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:05,918 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] [2020-10-29 09:11:05,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:11:05,918 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:05,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:05,919 INFO L82 PathProgramCache]: Analyzing trace with hash 937711355, now seen corresponding path program 1 times [2020-10-29 09:11:05,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:05,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443517531] [2020-10-29 09:11:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:06,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:06,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:11:06,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:11:06,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-29 09:11:06,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:06,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:06,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:11:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:11:06,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:06,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:06,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:06,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:06,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:06,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:11:06,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:06,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:06,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443517531] [2020-10-29 09:11:06,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:11:06,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:11:06,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629681545] [2020-10-29 09:11:06,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:11:06,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:06,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:11:06,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:11:06,435 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 5 states. [2020-10-29 09:11:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:06,634 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2020-10-29 09:11:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:11:06,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-29 09:11:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:06,636 INFO L225 Difference]: With dead ends: 97 [2020-10-29 09:11:06,636 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 09:11:06,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:11:06,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 09:11:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-29 09:11:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 09:11:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2020-10-29 09:11:06,647 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 23 [2020-10-29 09:11:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:06,647 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2020-10-29 09:11:06,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:11:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2020-10-29 09:11:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:11:06,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:06,649 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:06,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:11:06,649 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:06,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:06,650 INFO L82 PathProgramCache]: Analyzing trace with hash 309576248, now seen corresponding path program 1 times [2020-10-29 09:11:06,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:06,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65966423] [2020-10-29 09:11:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:06,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:06,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:11:06,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 09:11:06,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:06,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:11:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:11:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:06,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:06,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:06,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:11:06,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:06,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:06,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65966423] [2020-10-29 09:11:06,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:06,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:11:06,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165950252] [2020-10-29 09:11:06,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:11:06,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:06,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:11:06,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:11:06,960 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand 7 states. [2020-10-29 09:11:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:07,325 INFO L93 Difference]: Finished difference Result 130 states and 159 transitions. [2020-10-29 09:11:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:11:07,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-29 09:11:07,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:07,328 INFO L225 Difference]: With dead ends: 130 [2020-10-29 09:11:07,328 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 09:11:07,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 09:11:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 84. [2020-10-29 09:11:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 09:11:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-10-29 09:11:07,355 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 25 [2020-10-29 09:11:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:07,356 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-10-29 09:11:07,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:11:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-10-29 09:11:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:11:07,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:07,358 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:07,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:11:07,359 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:07,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:07,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1376318958, now seen corresponding path program 1 times [2020-10-29 09:11:07,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:07,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492804384] [2020-10-29 09:11:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:07,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:07,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:11:07,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:11:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-29 09:11:07,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:07,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:11:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:11:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:07,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:07,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:07,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492804384] [2020-10-29 09:11:07,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:07,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:11:07,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183643420] [2020-10-29 09:11:07,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:11:07,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:07,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:11:07,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:11:07,807 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 7 states. [2020-10-29 09:11:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:08,111 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2020-10-29 09:11:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:11:08,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-29 09:11:08,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:08,113 INFO L225 Difference]: With dead ends: 129 [2020-10-29 09:11:08,113 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 09:11:08,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 09:11:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 90. [2020-10-29 09:11:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 09:11:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2020-10-29 09:11:08,136 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 26 [2020-10-29 09:11:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:08,138 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2020-10-29 09:11:08,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:11:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2020-10-29 09:11:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:11:08,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:08,141 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:08,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:11:08,141 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1749170472, now seen corresponding path program 1 times [2020-10-29 09:11:08,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:08,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558034940] [2020-10-29 09:11:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:08,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:08,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:11:08,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:11:08,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 09:11:08,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:08,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:11:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:11:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:08,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:11:08,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:08,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:08,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558034940] [2020-10-29 09:11:08,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:08,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:11:08,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116219804] [2020-10-29 09:11:08,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:11:08,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:08,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:11:08,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:11:08,513 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand 7 states. [2020-10-29 09:11:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:08,829 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2020-10-29 09:11:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:11:08,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-29 09:11:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:08,831 INFO L225 Difference]: With dead ends: 128 [2020-10-29 09:11:08,831 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 09:11:08,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 09:11:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 99. [2020-10-29 09:11:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 09:11:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2020-10-29 09:11:08,853 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 27 [2020-10-29 09:11:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:08,853 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2020-10-29 09:11:08,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:11:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2020-10-29 09:11:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:11:08,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:08,858 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:08,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:11:08,858 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:08,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:08,859 INFO L82 PathProgramCache]: Analyzing trace with hash 262399079, now seen corresponding path program 1 times [2020-10-29 09:11:08,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:08,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80698736] [2020-10-29 09:11:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:09,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:09,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:11:09,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:09,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 09:11:09,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:09,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:09,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:11:09,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:11:09,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:11:09,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:09,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:09,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:09,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:09,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:09,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:09,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:09,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80698736] [2020-10-29 09:11:09,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:11:09,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:11:09,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32884671] [2020-10-29 09:11:09,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:11:09,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:09,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:11:09,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:09,095 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand 4 states. [2020-10-29 09:11:09,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:09,270 INFO L93 Difference]: Finished difference Result 187 states and 235 transitions. [2020-10-29 09:11:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:11:09,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-29 09:11:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:09,272 INFO L225 Difference]: With dead ends: 187 [2020-10-29 09:11:09,272 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 09:11:09,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 09:11:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2020-10-29 09:11:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 09:11:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2020-10-29 09:11:09,292 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 29 [2020-10-29 09:11:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:09,292 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2020-10-29 09:11:09,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:11:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2020-10-29 09:11:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:11:09,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:09,295 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:09,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:11:09,296 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash -84648472, now seen corresponding path program 1 times [2020-10-29 09:11:09,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:09,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819846106] [2020-10-29 09:11:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:09,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:09,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:09,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:11:09,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-29 09:11:09,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:09,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:11:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:11:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:09,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:09,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:09,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:09,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:09,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:09,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:09,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:09,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819846106] [2020-10-29 09:11:09,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:09,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:11:09,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819678789] [2020-10-29 09:11:09,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:11:09,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:09,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:11:09,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:09,853 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand 8 states. [2020-10-29 09:11:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:10,125 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2020-10-29 09:11:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:11:10,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-29 09:11:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:10,126 INFO L225 Difference]: With dead ends: 100 [2020-10-29 09:11:10,127 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 09:11:10,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 09:11:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2020-10-29 09:11:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 09:11:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2020-10-29 09:11:10,137 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 33 [2020-10-29 09:11:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:10,138 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2020-10-29 09:11:10,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:11:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2020-10-29 09:11:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:11:10,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:10,145 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:10,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:11:10,145 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:10,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2040254526, now seen corresponding path program 1 times [2020-10-29 09:11:10,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:10,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469438493] [2020-10-29 09:11:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:11:10,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:10,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 09:11:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:10,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:11:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:11:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:10,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:10,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:10,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:10,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:11:10,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:10,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:10,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469438493] [2020-10-29 09:11:10,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:10,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:11:10,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568499380] [2020-10-29 09:11:10,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:11:10,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:10,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:11:10,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:10,649 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand 8 states. [2020-10-29 09:11:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:10,963 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2020-10-29 09:11:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:11:10,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-29 09:11:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:10,964 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:11:10,964 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 09:11:10,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 09:11:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-29 09:11:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 09:11:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2020-10-29 09:11:10,973 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 34 [2020-10-29 09:11:10,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:10,975 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2020-10-29 09:11:10,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:11:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2020-10-29 09:11:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:11:10,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:10,980 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:10,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:11:10,980 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1668646551, now seen corresponding path program 1 times [2020-10-29 09:11:10,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:10,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490690140] [2020-10-29 09:11:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:11,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:11,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:11,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:11:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 09:11:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:11,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:11,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:11,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:11:11,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:11,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:11,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490690140] [2020-10-29 09:11:11,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:11,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:11:11,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760519875] [2020-10-29 09:11:11,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:11:11,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:11,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:11:11,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:11,409 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand 8 states. [2020-10-29 09:11:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:11,792 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2020-10-29 09:11:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:11:11,793 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-29 09:11:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:11,794 INFO L225 Difference]: With dead ends: 130 [2020-10-29 09:11:11,794 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 09:11:11,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:11:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 09:11:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2020-10-29 09:11:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 09:11:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2020-10-29 09:11:11,804 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 35 [2020-10-29 09:11:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:11,804 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2020-10-29 09:11:11,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:11:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2020-10-29 09:11:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:11:11,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:11,805 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:11,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:11:11,805 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:11,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1652962952, now seen corresponding path program 1 times [2020-10-29 09:11:11,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:11,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145065142] [2020-10-29 09:11:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:11,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:11,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:12,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:12,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:11:12,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:11:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-29 09:11:12,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:12,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:11:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:11:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:12,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:12,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:12,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:12,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:11:12,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:12,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:12,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:12,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145065142] [2020-10-29 09:11:12,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:12,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:11:12,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408577873] [2020-10-29 09:11:12,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:11:12,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:11:12,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:12,232 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand 8 states. [2020-10-29 09:11:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:12,496 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2020-10-29 09:11:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:11:12,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-29 09:11:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:12,498 INFO L225 Difference]: With dead ends: 107 [2020-10-29 09:11:12,498 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 09:11:12,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 09:11:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-29 09:11:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 09:11:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2020-10-29 09:11:12,506 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 35 [2020-10-29 09:11:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:12,507 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2020-10-29 09:11:12,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:11:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2020-10-29 09:11:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:11:12,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:12,508 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:12,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:11:12,508 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1242507287, now seen corresponding path program 1 times [2020-10-29 09:11:12,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:12,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059468736] [2020-10-29 09:11:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:12,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:12,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:12,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:11:12,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 09:11:12,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:12,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:11:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:11:12,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:12,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:12,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:12,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:12,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:12,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:12,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059468736] [2020-10-29 09:11:12,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:12,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:11:12,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197346837] [2020-10-29 09:11:12,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:11:12,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:12,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:11:12,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:12,865 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand 8 states. [2020-10-29 09:11:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:13,261 INFO L93 Difference]: Finished difference Result 166 states and 193 transitions. [2020-10-29 09:11:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:11:13,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-29 09:11:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:13,263 INFO L225 Difference]: With dead ends: 166 [2020-10-29 09:11:13,263 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 09:11:13,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 09:11:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2020-10-29 09:11:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 09:11:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-10-29 09:11:13,274 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 37 [2020-10-29 09:11:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:13,274 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-10-29 09:11:13,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:11:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-10-29 09:11:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:11:13,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:13,275 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:13,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:11:13,275 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:13,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1804779986, now seen corresponding path program 1 times [2020-10-29 09:11:13,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:13,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485223723] [2020-10-29 09:11:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:13,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:11:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-29 09:11:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:13,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:11:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:11:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:13,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:13,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485223723] [2020-10-29 09:11:13,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:13,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:11:13,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231134729] [2020-10-29 09:11:13,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:11:13,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:11:13,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:11:13,853 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 10 states. [2020-10-29 09:11:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:14,457 INFO L93 Difference]: Finished difference Result 183 states and 212 transitions. [2020-10-29 09:11:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:11:14,458 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-29 09:11:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:14,460 INFO L225 Difference]: With dead ends: 183 [2020-10-29 09:11:14,460 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 09:11:14,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:11:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 09:11:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2020-10-29 09:11:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 09:11:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-10-29 09:11:14,490 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 38 [2020-10-29 09:11:14,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:14,491 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-10-29 09:11:14,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:11:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-10-29 09:11:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:11:14,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:14,492 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:14,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:11:14,492 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:14,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1324561949, now seen corresponding path program 1 times [2020-10-29 09:11:14,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:14,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021471862] [2020-10-29 09:11:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:14,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:14,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:14,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:11:14,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:11:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-29 09:11:14,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:14,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:11:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:11:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:14,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:14,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:14,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:14,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:15,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021471862] [2020-10-29 09:11:15,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:15,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:11:15,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363007871] [2020-10-29 09:11:15,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:11:15,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:15,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:11:15,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:11:15,003 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-10-29 09:11:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:15,401 INFO L93 Difference]: Finished difference Result 170 states and 198 transitions. [2020-10-29 09:11:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:11:15,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-29 09:11:15,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:15,403 INFO L225 Difference]: With dead ends: 170 [2020-10-29 09:11:15,403 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 09:11:15,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:15,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 09:11:15,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-10-29 09:11:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 09:11:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-10-29 09:11:15,414 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 38 [2020-10-29 09:11:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:15,414 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-10-29 09:11:15,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:11:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-10-29 09:11:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:11:15,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:15,415 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:15,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:11:15,416 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:15,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1953957478, now seen corresponding path program 1 times [2020-10-29 09:11:15,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:15,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458574698] [2020-10-29 09:11:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:15,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:15,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:11:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 09:11:15,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:15,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:11:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 09:11:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:11:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:15,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:15,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:15,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:15,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:11:15,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458574698] [2020-10-29 09:11:15,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:11:15,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:11:15,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881111644] [2020-10-29 09:11:15,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:11:15,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:15,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:11:15,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:15,625 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 4 states. [2020-10-29 09:11:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:15,859 INFO L93 Difference]: Finished difference Result 255 states and 307 transitions. [2020-10-29 09:11:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:11:15,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 09:11:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:15,861 INFO L225 Difference]: With dead ends: 255 [2020-10-29 09:11:15,861 INFO L226 Difference]: Without dead ends: 155 [2020-10-29 09:11:15,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-29 09:11:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 136. [2020-10-29 09:11:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-29 09:11:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 155 transitions. [2020-10-29 09:11:15,874 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 155 transitions. Word has length 41 [2020-10-29 09:11:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:15,875 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 155 transitions. [2020-10-29 09:11:15,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:11:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 155 transitions. [2020-10-29 09:11:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:11:15,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:15,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:15,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:11:15,877 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:15,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:15,877 INFO L82 PathProgramCache]: Analyzing trace with hash 989426657, now seen corresponding path program 1 times [2020-10-29 09:11:15,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:15,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859150751] [2020-10-29 09:11:15,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:15,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:15,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:16,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:16,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:16,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:16,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:11:16,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:11:16,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-29 09:11:16,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:16,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:16,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:11:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:11:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:11:16,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:16,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:16,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:16,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:16,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:16,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:16,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:16,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:16,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:16,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859150751] [2020-10-29 09:11:16,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:11:16,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:11:16,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43229093] [2020-10-29 09:11:16,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:11:16,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:16,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:11:16,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:11:16,988 INFO L87 Difference]: Start difference. First operand 136 states and 155 transitions. Second operand 5 states. [2020-10-29 09:11:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:17,168 INFO L93 Difference]: Finished difference Result 210 states and 243 transitions. [2020-10-29 09:11:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:11:17,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-29 09:11:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:17,170 INFO L225 Difference]: With dead ends: 210 [2020-10-29 09:11:17,170 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 09:11:17,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:11:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 09:11:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-29 09:11:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 09:11:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-10-29 09:11:17,182 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 43 [2020-10-29 09:11:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:17,182 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-10-29 09:11:17,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:11:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-10-29 09:11:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:11:17,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:17,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:17,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:11:17,183 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:17,184 INFO L82 PathProgramCache]: Analyzing trace with hash 402620643, now seen corresponding path program 1 times [2020-10-29 09:11:17,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:17,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401429148] [2020-10-29 09:11:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:17,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:17,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 09:11:17,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 09:11:17,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:17,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:11:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:11:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:17,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:17,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:17,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:17,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:17,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:11:17,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:17,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:17,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401429148] [2020-10-29 09:11:17,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:17,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:11:17,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212825008] [2020-10-29 09:11:17,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:11:17,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:11:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:17,529 INFO L87 Difference]: Start difference. First operand 125 states and 140 transitions. Second operand 9 states. [2020-10-29 09:11:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:17,943 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2020-10-29 09:11:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:11:17,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-29 09:11:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:17,945 INFO L225 Difference]: With dead ends: 156 [2020-10-29 09:11:17,945 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 09:11:17,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:11:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 09:11:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-29 09:11:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 09:11:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2020-10-29 09:11:17,955 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 43 [2020-10-29 09:11:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:17,955 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2020-10-29 09:11:17,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:11:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2020-10-29 09:11:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:11:17,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:17,956 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:17,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:11:17,957 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1070744259, now seen corresponding path program 1 times [2020-10-29 09:11:17,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:17,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166672578] [2020-10-29 09:11:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:18,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:11:18,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-29 09:11:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:18,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:11:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:11:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:18,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:18,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:18,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:18,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:18,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166672578] [2020-10-29 09:11:18,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:18,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:11:18,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676704422] [2020-10-29 09:11:18,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:11:18,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:18,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:11:18,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:18,749 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand 9 states. [2020-10-29 09:11:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:19,174 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2020-10-29 09:11:19,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:11:19,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-29 09:11:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:19,176 INFO L225 Difference]: With dead ends: 119 [2020-10-29 09:11:19,176 INFO L226 Difference]: Without dead ends: 115 [2020-10-29 09:11:19,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:11:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-29 09:11:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-29 09:11:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 09:11:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-10-29 09:11:19,186 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 46 [2020-10-29 09:11:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:19,187 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-10-29 09:11:19,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:11:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-10-29 09:11:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 09:11:19,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:19,189 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:19,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:11:19,189 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:19,189 INFO L82 PathProgramCache]: Analyzing trace with hash -501133880, now seen corresponding path program 1 times [2020-10-29 09:11:19,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:19,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392266941] [2020-10-29 09:11:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:19,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:19,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:19,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:11:19,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:19,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-29 09:11:19,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:19,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:11:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:11:19,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:20,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:20,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:20,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:20,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:20,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:20,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:20,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:20,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392266941] [2020-10-29 09:11:20,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:20,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:11:20,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863386057] [2020-10-29 09:11:20,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:11:20,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:20,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:11:20,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:11:20,265 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 11 states. [2020-10-29 09:11:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:20,676 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-10-29 09:11:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:11:20,676 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-29 09:11:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:20,677 INFO L225 Difference]: With dead ends: 127 [2020-10-29 09:11:20,677 INFO L226 Difference]: Without dead ends: 123 [2020-10-29 09:11:20,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:11:20,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-29 09:11:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 95. [2020-10-29 09:11:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 09:11:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-29 09:11:20,698 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 47 [2020-10-29 09:11:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:20,698 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-29 09:11:20,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:11:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-29 09:11:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 09:11:20,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:20,699 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:20,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:11:20,699 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:20,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1666759241, now seen corresponding path program 1 times [2020-10-29 09:11:20,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:20,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235810405] [2020-10-29 09:11:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:21,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:21,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:11:21,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-29 09:11:21,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:21,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:11:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:11:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:21,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:21,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:21,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:21,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:21,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:21,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:21,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:21,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235810405] [2020-10-29 09:11:21,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:21,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:11:21,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316970378] [2020-10-29 09:11:21,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:11:21,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:21,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:11:21,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:21,227 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 9 states. [2020-10-29 09:11:21,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:21,517 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2020-10-29 09:11:21,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:11:21,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-29 09:11:21,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:21,518 INFO L225 Difference]: With dead ends: 98 [2020-10-29 09:11:21,518 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 09:11:21,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:11:21,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 09:11:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-10-29 09:11:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 09:11:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2020-10-29 09:11:21,530 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 47 [2020-10-29 09:11:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:21,530 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2020-10-29 09:11:21,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:11:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2020-10-29 09:11:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:11:21,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:21,531 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:21,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:11:21,531 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:21,532 INFO L82 PathProgramCache]: Analyzing trace with hash -127104064, now seen corresponding path program 1 times [2020-10-29 09:11:21,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:21,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879085710] [2020-10-29 09:11:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:21,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:21,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:11:21,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:21,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-29 09:11:21,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:21,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:11:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:11:21,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:22,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:22,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:22,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:11:22,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:22,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:22,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879085710] [2020-10-29 09:11:22,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:22,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:11:22,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262542074] [2020-10-29 09:11:22,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:11:22,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:11:22,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:22,142 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 9 states. [2020-10-29 09:11:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:22,611 INFO L93 Difference]: Finished difference Result 178 states and 194 transitions. [2020-10-29 09:11:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:11:22,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-29 09:11:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:22,615 INFO L225 Difference]: With dead ends: 178 [2020-10-29 09:11:22,615 INFO L226 Difference]: Without dead ends: 174 [2020-10-29 09:11:22,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:11:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-29 09:11:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 124. [2020-10-29 09:11:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-29 09:11:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2020-10-29 09:11:22,627 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 50 [2020-10-29 09:11:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:22,627 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2020-10-29 09:11:22,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:11:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2020-10-29 09:11:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:11:22,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:22,628 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:22,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:11:22,629 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2035219383, now seen corresponding path program 1 times [2020-10-29 09:11:22,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:22,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768117455] [2020-10-29 09:11:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:22,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:22,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:11:22,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 09:11:22,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:22,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:11:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:11:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:23,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:23,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:23,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:23,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:23,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:23,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:23,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768117455] [2020-10-29 09:11:23,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:23,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:11:23,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772783096] [2020-10-29 09:11:23,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:11:23,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:11:23,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:11:23,269 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand 9 states. [2020-10-29 09:11:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:23,791 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2020-10-29 09:11:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:11:23,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-29 09:11:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:23,793 INFO L225 Difference]: With dead ends: 177 [2020-10-29 09:11:23,793 INFO L226 Difference]: Without dead ends: 173 [2020-10-29 09:11:23,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:11:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-29 09:11:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 127. [2020-10-29 09:11:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 09:11:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 141 transitions. [2020-10-29 09:11:23,804 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 141 transitions. Word has length 53 [2020-10-29 09:11:23,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:23,804 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 141 transitions. [2020-10-29 09:11:23,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:11:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 141 transitions. [2020-10-29 09:11:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:11:23,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:23,805 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:23,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 09:11:23,806 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:23,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:23,806 INFO L82 PathProgramCache]: Analyzing trace with hash -981588100, now seen corresponding path program 1 times [2020-10-29 09:11:23,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:23,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907848900] [2020-10-29 09:11:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:24,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:24,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:11:24,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:24,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 09:11:24,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:24,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:24,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:11:24,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:24,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:11:24,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:24,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:24,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:24,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:24,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:24,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:24,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:24,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:24,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907848900] [2020-10-29 09:11:24,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:24,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:11:24,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641145453] [2020-10-29 09:11:24,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:11:24,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:24,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:11:24,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:11:24,376 INFO L87 Difference]: Start difference. First operand 127 states and 141 transitions. Second operand 10 states. [2020-10-29 09:11:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:24,881 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2020-10-29 09:11:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:11:24,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-29 09:11:24,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:24,883 INFO L225 Difference]: With dead ends: 170 [2020-10-29 09:11:24,883 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 09:11:24,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:11:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 09:11:24,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2020-10-29 09:11:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 09:11:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-10-29 09:11:24,896 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 54 [2020-10-29 09:11:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:24,896 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-10-29 09:11:24,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:11:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-10-29 09:11:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:11:24,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:24,897 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:24,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 09:11:24,897 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:24,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:24,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1326286612, now seen corresponding path program 1 times [2020-10-29 09:11:24,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:24,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311370511] [2020-10-29 09:11:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:24,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:25,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:25,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 09:11:25,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-29 09:11:25,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:25,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:11:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:11:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:25,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:25,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:25,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:25,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:25,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:25,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:25,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311370511] [2020-10-29 09:11:25,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:25,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:11:25,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25197666] [2020-10-29 09:11:25,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:11:25,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:25,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:11:25,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:11:25,662 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 12 states. [2020-10-29 09:11:26,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:26,332 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2020-10-29 09:11:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:11:26,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-29 09:11:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:26,334 INFO L225 Difference]: With dead ends: 211 [2020-10-29 09:11:26,334 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 09:11:26,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:11:26,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 09:11:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 156. [2020-10-29 09:11:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 09:11:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2020-10-29 09:11:26,347 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 55 [2020-10-29 09:11:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:26,347 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2020-10-29 09:11:26,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:11:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2020-10-29 09:11:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 09:11:26,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:26,349 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:26,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 09:11:26,349 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash -2141977510, now seen corresponding path program 2 times [2020-10-29 09:11:26,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:26,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494899664] [2020-10-29 09:11:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:26,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:26,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:11:26,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-29 09:11:26,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:26,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:11:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 09:11:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:27,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:27,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:27,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:27,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:27,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:27,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:27,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:27,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494899664] [2020-10-29 09:11:27,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:27,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:11:27,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311343839] [2020-10-29 09:11:27,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:11:27,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:27,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:11:27,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:11:27,067 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand 10 states. [2020-10-29 09:11:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:27,586 INFO L93 Difference]: Finished difference Result 192 states and 206 transitions. [2020-10-29 09:11:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:11:27,587 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-29 09:11:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:27,588 INFO L225 Difference]: With dead ends: 192 [2020-10-29 09:11:27,588 INFO L226 Difference]: Without dead ends: 188 [2020-10-29 09:11:27,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:11:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-29 09:11:27,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 155. [2020-10-29 09:11:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 09:11:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2020-10-29 09:11:27,604 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 59 [2020-10-29 09:11:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:27,604 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2020-10-29 09:11:27,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:11:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2020-10-29 09:11:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:11:27,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:27,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:27,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 09:11:27,606 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:27,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:27,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1486843080, now seen corresponding path program 2 times [2020-10-29 09:11:27,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:27,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928117037] [2020-10-29 09:11:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:27,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:27,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:11:27,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:27,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-29 09:11:27,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:27,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:27,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:11:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:11:27,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:28,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:28,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:28,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:28,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:28,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:28,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:28,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928117037] [2020-10-29 09:11:28,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:28,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:11:28,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317590399] [2020-10-29 09:11:28,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:11:28,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:28,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:11:28,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:11:28,241 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 11 states. [2020-10-29 09:11:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:28,859 INFO L93 Difference]: Finished difference Result 195 states and 208 transitions. [2020-10-29 09:11:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:11:28,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-29 09:11:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:28,861 INFO L225 Difference]: With dead ends: 195 [2020-10-29 09:11:28,861 INFO L226 Difference]: Without dead ends: 151 [2020-10-29 09:11:28,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:11:28,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-29 09:11:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-29 09:11:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 09:11:28,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 163 transitions. [2020-10-29 09:11:28,876 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 163 transitions. Word has length 62 [2020-10-29 09:11:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:28,876 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 163 transitions. [2020-10-29 09:11:28,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:11:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 163 transitions. [2020-10-29 09:11:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:11:28,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:28,877 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:28,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 09:11:28,878 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:28,878 INFO L82 PathProgramCache]: Analyzing trace with hash -667120273, now seen corresponding path program 2 times [2020-10-29 09:11:28,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:28,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492084905] [2020-10-29 09:11:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:11:29,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-29 09:11:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:29,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:11:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:11:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:29,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:29,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:29,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:29,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:29,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:29,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:29,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:29,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492084905] [2020-10-29 09:11:29,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:29,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:11:29,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192606302] [2020-10-29 09:11:29,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:11:29,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:29,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:11:29,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:11:29,929 INFO L87 Difference]: Start difference. First operand 151 states and 163 transitions. Second operand 11 states. [2020-10-29 09:11:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:30,626 INFO L93 Difference]: Finished difference Result 234 states and 254 transitions. [2020-10-29 09:11:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:11:30,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-29 09:11:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:30,628 INFO L225 Difference]: With dead ends: 234 [2020-10-29 09:11:30,628 INFO L226 Difference]: Without dead ends: 230 [2020-10-29 09:11:30,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:11:30,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-29 09:11:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 178. [2020-10-29 09:11:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 09:11:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 196 transitions. [2020-10-29 09:11:30,642 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 196 transitions. Word has length 62 [2020-10-29 09:11:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:30,642 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 196 transitions. [2020-10-29 09:11:30,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:11:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 196 transitions. [2020-10-29 09:11:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:11:30,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:30,643 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:30,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 09:11:30,644 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:30,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1359066208, now seen corresponding path program 2 times [2020-10-29 09:11:30,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:30,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20441441] [2020-10-29 09:11:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:30,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:31,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:31,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 09:11:31,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:31,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-29 09:11:31,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:31,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:11:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 09:11:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:31,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:31,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:31,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:11:31,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:31,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:31,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:31,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:11:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:31,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20441441] [2020-10-29 09:11:31,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:31,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:11:31,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037991777] [2020-10-29 09:11:31,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:11:31,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:31,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:11:31,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:11:31,460 INFO L87 Difference]: Start difference. First operand 178 states and 196 transitions. Second operand 12 states. [2020-10-29 09:11:32,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:32,181 INFO L93 Difference]: Finished difference Result 273 states and 301 transitions. [2020-10-29 09:11:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:11:32,182 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-29 09:11:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:32,185 INFO L225 Difference]: With dead ends: 273 [2020-10-29 09:11:32,185 INFO L226 Difference]: Without dead ends: 269 [2020-10-29 09:11:32,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:11:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-29 09:11:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 186. [2020-10-29 09:11:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-29 09:11:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 204 transitions. [2020-10-29 09:11:32,200 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 204 transitions. Word has length 63 [2020-10-29 09:11:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:32,201 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 204 transitions. [2020-10-29 09:11:32,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:11:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 204 transitions. [2020-10-29 09:11:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:11:32,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:32,202 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:32,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 09:11:32,202 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:32,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1809538746, now seen corresponding path program 3 times [2020-10-29 09:11:32,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:32,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331116177] [2020-10-29 09:11:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:32,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:32,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:11:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-29 09:11:32,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:32,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:11:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:11:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:33,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:33,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:33,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:33,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:33,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:11:33,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:33,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:33,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:33,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331116177] [2020-10-29 09:11:33,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:33,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:11:33,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972968170] [2020-10-29 09:11:33,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:11:33,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:11:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:11:33,357 INFO L87 Difference]: Start difference. First operand 186 states and 204 transitions. Second operand 13 states. [2020-10-29 09:11:34,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:34,259 INFO L93 Difference]: Finished difference Result 216 states and 234 transitions. [2020-10-29 09:11:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:11:34,260 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-29 09:11:34,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:34,262 INFO L225 Difference]: With dead ends: 216 [2020-10-29 09:11:34,262 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 09:11:34,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:11:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 09:11:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 186. [2020-10-29 09:11:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-29 09:11:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 204 transitions. [2020-10-29 09:11:34,281 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 204 transitions. Word has length 64 [2020-10-29 09:11:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:34,281 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 204 transitions. [2020-10-29 09:11:34,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:11:34,281 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 204 transitions. [2020-10-29 09:11:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:11:34,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:34,282 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:34,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 09:11:34,283 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:34,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1382860001, now seen corresponding path program 3 times [2020-10-29 09:11:34,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:34,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082504848] [2020-10-29 09:11:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:34,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:11:34,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 09:11:34,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:34,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:11:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 09:11:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:11:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:34,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:34,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:34,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:34,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:34,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 09:11:34,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082504848] [2020-10-29 09:11:34,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:11:34,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:11:34,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288045837] [2020-10-29 09:11:34,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:11:34,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:34,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:11:34,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:34,450 INFO L87 Difference]: Start difference. First operand 186 states and 204 transitions. Second operand 4 states. [2020-10-29 09:11:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:34,599 INFO L93 Difference]: Finished difference Result 275 states and 304 transitions. [2020-10-29 09:11:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:11:34,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-29 09:11:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:34,601 INFO L225 Difference]: With dead ends: 275 [2020-10-29 09:11:34,601 INFO L226 Difference]: Without dead ends: 143 [2020-10-29 09:11:34,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:11:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-29 09:11:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-29 09:11:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 09:11:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 150 transitions. [2020-10-29 09:11:34,618 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 150 transitions. Word has length 70 [2020-10-29 09:11:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:34,618 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 150 transitions. [2020-10-29 09:11:34,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:11:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 150 transitions. [2020-10-29 09:11:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 09:11:34,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:34,619 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:34,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 09:11:34,620 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:34,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:34,620 INFO L82 PathProgramCache]: Analyzing trace with hash 717870508, now seen corresponding path program 4 times [2020-10-29 09:11:34,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:34,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004868404] [2020-10-29 09:11:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:35,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 09:11:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-29 09:11:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:35,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:11:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:11:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:35,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:35,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:35,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:35,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004868404] [2020-10-29 09:11:35,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:35,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:11:35,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139646518] [2020-10-29 09:11:35,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:11:35,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:35,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:11:35,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:11:35,790 INFO L87 Difference]: Start difference. First operand 143 states and 150 transitions. Second operand 13 states. [2020-10-29 09:11:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:36,565 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2020-10-29 09:11:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:11:36,566 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-29 09:11:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:36,567 INFO L225 Difference]: With dead ends: 173 [2020-10-29 09:11:36,567 INFO L226 Difference]: Without dead ends: 115 [2020-10-29 09:11:36,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:11:36,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-29 09:11:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-29 09:11:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 09:11:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2020-10-29 09:11:36,585 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 71 [2020-10-29 09:11:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:36,585 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2020-10-29 09:11:36,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:11:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2020-10-29 09:11:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 09:11:36,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:36,586 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:36,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 09:11:36,586 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:36,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:36,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1551765751, now seen corresponding path program 4 times [2020-10-29 09:11:36,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:36,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069281443] [2020-10-29 09:11:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:37,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:37,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 09:11:37,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-29 09:11:37,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:37,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:11:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 09:11:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:37,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:37,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:37,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:37,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:11:37,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:37,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:37,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069281443] [2020-10-29 09:11:37,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:37,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:11:37,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924253930] [2020-10-29 09:11:37,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:11:37,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:37,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:11:37,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:11:37,909 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand 12 states. [2020-10-29 09:11:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:38,407 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2020-10-29 09:11:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:11:38,408 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-29 09:11:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:38,409 INFO L225 Difference]: With dead ends: 118 [2020-10-29 09:11:38,410 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 09:11:38,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:11:38,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 09:11:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2020-10-29 09:11:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 09:11:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-10-29 09:11:38,419 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 71 [2020-10-29 09:11:38,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:38,419 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-10-29 09:11:38,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:11:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-10-29 09:11:38,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 09:11:38,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:38,420 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:38,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 09:11:38,420 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:38,421 INFO L82 PathProgramCache]: Analyzing trace with hash -295139834, now seen corresponding path program 5 times [2020-10-29 09:11:38,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:38,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435554757] [2020-10-29 09:11:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:39,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 09:11:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-10-29 09:11:39,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:39,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:11:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:11:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:39,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:39,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:39,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:39,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:39,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:39,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:11:39,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:39,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:39,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435554757] [2020-10-29 09:11:39,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:39,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:11:39,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321724963] [2020-10-29 09:11:39,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:11:39,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:39,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:11:39,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:11:39,741 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 14 states. [2020-10-29 09:11:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:40,551 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2020-10-29 09:11:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:11:40,552 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-10-29 09:11:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:40,554 INFO L225 Difference]: With dead ends: 153 [2020-10-29 09:11:40,554 INFO L226 Difference]: Without dead ends: 149 [2020-10-29 09:11:40,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:11:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-29 09:11:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 124. [2020-10-29 09:11:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-29 09:11:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-29 09:11:40,567 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 72 [2020-10-29 09:11:40,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:40,567 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-29 09:11:40,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:11:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-29 09:11:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 09:11:40,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:40,568 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:40,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 09:11:40,569 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:40,569 INFO L82 PathProgramCache]: Analyzing trace with hash 87007570, now seen corresponding path program 6 times [2020-10-29 09:11:40,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:40,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611877461] [2020-10-29 09:11:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:41,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:41,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 09:11:41,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-29 09:11:41,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:41,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:11:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 09:11:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:42,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:42,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:42,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:42,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:42,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:42,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611877461] [2020-10-29 09:11:42,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:42,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:11:42,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008062446] [2020-10-29 09:11:42,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:11:42,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:42,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:11:42,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:11:42,170 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 14 states. [2020-10-29 09:11:43,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:43,129 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-29 09:11:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:11:43,133 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-29 09:11:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:43,134 INFO L225 Difference]: With dead ends: 161 [2020-10-29 09:11:43,134 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 09:11:43,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:11:43,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 09:11:43,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 132. [2020-10-29 09:11:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-29 09:11:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2020-10-29 09:11:43,154 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 80 [2020-10-29 09:11:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:43,155 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2020-10-29 09:11:43,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:11:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2020-10-29 09:11:43,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 09:11:43,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:43,159 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:43,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 09:11:43,159 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:43,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1622945568, now seen corresponding path program 7 times [2020-10-29 09:11:43,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:43,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564289321] [2020-10-29 09:11:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:44,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 09:11:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-10-29 09:11:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:44,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:11:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 09:11:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:44,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:44,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:44,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:11:44,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:44,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:44,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564289321] [2020-10-29 09:11:44,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:44,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:11:44,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998479988] [2020-10-29 09:11:44,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:11:44,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:44,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:11:44,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:11:44,849 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand 15 states. [2020-10-29 09:11:46,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:46,031 INFO L93 Difference]: Finished difference Result 212 states and 219 transitions. [2020-10-29 09:11:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:11:46,032 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-10-29 09:11:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:46,034 INFO L225 Difference]: With dead ends: 212 [2020-10-29 09:11:46,034 INFO L226 Difference]: Without dead ends: 208 [2020-10-29 09:11:46,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:11:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-29 09:11:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 161. [2020-10-29 09:11:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-29 09:11:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2020-10-29 09:11:46,063 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 81 [2020-10-29 09:11:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:46,064 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2020-10-29 09:11:46,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:11:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2020-10-29 09:11:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 09:11:46,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:46,065 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:46,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 09:11:46,065 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:46,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1594052450, now seen corresponding path program 8 times [2020-10-29 09:11:46,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:46,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190456177] [2020-10-29 09:11:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:47,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 09:11:47,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-29 09:11:47,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:47,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:11:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 09:11:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:47,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:47,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:11:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:47,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 16 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:47,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190456177] [2020-10-29 09:11:47,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:47,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:11:47,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856740891] [2020-10-29 09:11:47,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:11:47,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:47,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:11:47,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:11:47,835 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand 15 states. [2020-10-29 09:11:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:48,931 INFO L93 Difference]: Finished difference Result 199 states and 205 transitions. [2020-10-29 09:11:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:11:48,932 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-10-29 09:11:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:48,933 INFO L225 Difference]: With dead ends: 199 [2020-10-29 09:11:48,933 INFO L226 Difference]: Without dead ends: 133 [2020-10-29 09:11:48,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:11:48,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-29 09:11:48,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-10-29 09:11:48,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 09:11:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2020-10-29 09:11:48,948 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 88 [2020-10-29 09:11:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:48,948 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2020-10-29 09:11:48,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:11:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2020-10-29 09:11:48,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 09:11:48,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:48,949 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:48,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 09:11:48,949 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:48,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1329754004, now seen corresponding path program 9 times [2020-10-29 09:11:48,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:48,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213051349] [2020-10-29 09:11:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:50,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:50,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 09:11:50,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-29 09:11:50,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:50,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:11:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 09:11:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:11:50,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:50,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:50,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:50,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:11:50,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:50,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:50,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:50,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213051349] [2020-10-29 09:11:50,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:50,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:11:50,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209068787] [2020-10-29 09:11:50,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:11:50,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:50,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:11:50,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:11:50,866 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 16 states. [2020-10-29 09:11:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:52,046 INFO L93 Difference]: Finished difference Result 170 states and 175 transitions. [2020-10-29 09:11:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:11:52,047 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 89 [2020-10-29 09:11:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:52,048 INFO L225 Difference]: With dead ends: 170 [2020-10-29 09:11:52,049 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 09:11:52,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:11:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 09:11:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 141. [2020-10-29 09:11:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 09:11:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2020-10-29 09:11:52,066 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 89 [2020-10-29 09:11:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:52,066 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2020-10-29 09:11:52,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:11:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2020-10-29 09:11:52,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 09:11:52,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:52,067 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:52,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 09:11:52,068 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:52,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:52,068 INFO L82 PathProgramCache]: Analyzing trace with hash 653009734, now seen corresponding path program 10 times [2020-10-29 09:11:52,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:52,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368781694] [2020-10-29 09:11:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:52,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:52,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 09:11:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-29 09:11:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:53,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:11:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 09:11:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:54,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:54,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:54,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:54,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:11:54,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:54,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:54,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368781694] [2020-10-29 09:11:54,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:54,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:11:54,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216853796] [2020-10-29 09:11:54,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:11:54,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:54,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:11:54,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:11:54,139 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 16 states. [2020-10-29 09:11:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:55,151 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2020-10-29 09:11:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:11:55,152 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-10-29 09:11:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:55,153 INFO L225 Difference]: With dead ends: 169 [2020-10-29 09:11:55,153 INFO L226 Difference]: Without dead ends: 165 [2020-10-29 09:11:55,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:11:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-29 09:11:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 141. [2020-10-29 09:11:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 09:11:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2020-10-29 09:11:55,169 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 90 [2020-10-29 09:11:55,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:55,170 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2020-10-29 09:11:55,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:11:55,170 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2020-10-29 09:11:55,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 09:11:55,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:55,171 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:55,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 09:11:55,172 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:55,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1646192056, now seen corresponding path program 11 times [2020-10-29 09:11:55,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:55,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219386409] [2020-10-29 09:11:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:56,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:56,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 09:11:56,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-10-29 09:11:56,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:56,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:11:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 09:11:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:57,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:57,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:57,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:11:57,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:57,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:57,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219386409] [2020-10-29 09:11:57,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:57,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:11:57,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860904091] [2020-10-29 09:11:57,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:11:57,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:11:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:11:57,538 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 16 states. [2020-10-29 09:11:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:58,856 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2020-10-29 09:11:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:11:58,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-29 09:11:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:58,858 INFO L225 Difference]: With dead ends: 186 [2020-10-29 09:11:58,858 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 09:11:58,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:11:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 09:11:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 149. [2020-10-29 09:11:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 09:11:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2020-10-29 09:11:58,877 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 97 [2020-10-29 09:11:58,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:58,878 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2020-10-29 09:11:58,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:11:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2020-10-29 09:11:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 09:11:58,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:58,879 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:11:58,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 09:11:58,879 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash 333577874, now seen corresponding path program 12 times [2020-10-29 09:11:58,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:58,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285827434] [2020-10-29 09:11:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:58,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:00,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:00,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 09:12:00,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-29 09:12:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:00,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:12:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 09:12:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:00,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:01,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:01,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:01,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:01,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:12:01,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:01,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:01,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:01,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285827434] [2020-10-29 09:12:01,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:01,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:12:01,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194329336] [2020-10-29 09:12:01,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:12:01,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:01,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:12:01,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:12:01,128 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand 17 states. [2020-10-29 09:12:02,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:02,677 INFO L93 Difference]: Finished difference Result 245 states and 252 transitions. [2020-10-29 09:12:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:12:02,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-10-29 09:12:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:02,679 INFO L225 Difference]: With dead ends: 245 [2020-10-29 09:12:02,680 INFO L226 Difference]: Without dead ends: 241 [2020-10-29 09:12:02,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:12:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-29 09:12:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 178. [2020-10-29 09:12:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 09:12:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 184 transitions. [2020-10-29 09:12:02,700 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 184 transitions. Word has length 98 [2020-10-29 09:12:02,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:02,701 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 184 transitions. [2020-10-29 09:12:02,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:12:02,701 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 184 transitions. [2020-10-29 09:12:02,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 09:12:02,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:02,702 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:02,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 09:12:02,702 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:02,703 INFO L82 PathProgramCache]: Analyzing trace with hash -542363900, now seen corresponding path program 13 times [2020-10-29 09:12:02,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:02,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909311692] [2020-10-29 09:12:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:04,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:04,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 09:12:04,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:04,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-29 09:12:04,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:04,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:12:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 09:12:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:04,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:04,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:04,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:04,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:12:04,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:04,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 20 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:04,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909311692] [2020-10-29 09:12:04,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:04,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:12:04,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458525440] [2020-10-29 09:12:04,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:12:04,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:04,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:12:04,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:12:04,800 INFO L87 Difference]: Start difference. First operand 178 states and 184 transitions. Second operand 17 states. [2020-10-29 09:12:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:06,291 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2020-10-29 09:12:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:12:06,292 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 105 [2020-10-29 09:12:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:06,293 INFO L225 Difference]: With dead ends: 224 [2020-10-29 09:12:06,293 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 09:12:06,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:12:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 09:12:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-29 09:12:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-29 09:12:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2020-10-29 09:12:06,313 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 105 [2020-10-29 09:12:06,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:06,314 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2020-10-29 09:12:06,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:12:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2020-10-29 09:12:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 09:12:06,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:06,316 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:06,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 09:12:06,316 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:06,317 INFO L82 PathProgramCache]: Analyzing trace with hash -887239202, now seen corresponding path program 14 times [2020-10-29 09:12:06,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:06,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084367568] [2020-10-29 09:12:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:07,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:07,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 09:12:07,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-29 09:12:07,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:07,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:12:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 09:12:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:08,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:08,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:12:08,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:08,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:08,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084367568] [2020-10-29 09:12:08,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:08,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:12:08,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053418085] [2020-10-29 09:12:08,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:12:08,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:08,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:12:08,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:12:08,443 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand 18 states. [2020-10-29 09:12:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:10,090 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2020-10-29 09:12:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:12:10,090 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 106 [2020-10-29 09:12:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:10,092 INFO L225 Difference]: With dead ends: 195 [2020-10-29 09:12:10,092 INFO L226 Difference]: Without dead ends: 191 [2020-10-29 09:12:10,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:12:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-29 09:12:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2020-10-29 09:12:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-29 09:12:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 162 transitions. [2020-10-29 09:12:10,117 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 162 transitions. Word has length 106 [2020-10-29 09:12:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:10,119 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 162 transitions. [2020-10-29 09:12:10,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:12:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 162 transitions. [2020-10-29 09:12:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 09:12:10,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:10,121 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:10,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 09:12:10,121 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:10,121 INFO L82 PathProgramCache]: Analyzing trace with hash -893379796, now seen corresponding path program 15 times [2020-10-29 09:12:10,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:10,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133141299] [2020-10-29 09:12:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:11,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:11,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 09:12:11,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-29 09:12:11,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:11,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:12:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 09:12:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:12,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:12,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:12,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:12,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:12,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:12:12,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:12,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:12:12,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133141299] [2020-10-29 09:12:12,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:12,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:12:12,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764263902] [2020-10-29 09:12:12,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:12:12,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:12,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:12:12,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:12:12,574 INFO L87 Difference]: Start difference. First operand 158 states and 162 transitions. Second operand 17 states. [2020-10-29 09:12:13,097 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 09:12:13,265 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-29 09:12:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:14,002 INFO L93 Difference]: Finished difference Result 194 states and 198 transitions. [2020-10-29 09:12:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:12:14,003 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-10-29 09:12:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:14,005 INFO L225 Difference]: With dead ends: 194 [2020-10-29 09:12:14,005 INFO L226 Difference]: Without dead ends: 190 [2020-10-29 09:12:14,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:12:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-29 09:12:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 158. [2020-10-29 09:12:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-29 09:12:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 162 transitions. [2020-10-29 09:12:14,025 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 162 transitions. Word has length 107 [2020-10-29 09:12:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:14,025 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 162 transitions. [2020-10-29 09:12:14,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:12:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 162 transitions. [2020-10-29 09:12:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 09:12:14,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:14,027 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:14,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 09:12:14,027 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:14,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:14,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1902874922, now seen corresponding path program 16 times [2020-10-29 09:12:14,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:14,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158331972] [2020-10-29 09:12:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:14,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:15,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 09:12:15,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1603 [2020-10-29 09:12:15,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:15,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:12:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 09:12:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:16,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:16,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:16,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:16,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:16,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:12:16,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:16,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:16,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:16,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158331972] [2020-10-29 09:12:16,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:16,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:12:16,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286224518] [2020-10-29 09:12:16,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:12:16,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:16,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:12:16,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:12:16,738 INFO L87 Difference]: Start difference. First operand 158 states and 162 transitions. Second operand 18 states. [2020-10-29 09:12:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:18,555 INFO L93 Difference]: Finished difference Result 211 states and 216 transitions. [2020-10-29 09:12:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:12:18,556 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 114 [2020-10-29 09:12:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:18,558 INFO L225 Difference]: With dead ends: 211 [2020-10-29 09:12:18,558 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 09:12:18,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:12:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 09:12:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 166. [2020-10-29 09:12:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-29 09:12:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2020-10-29 09:12:18,579 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 114 [2020-10-29 09:12:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:18,579 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 170 transitions. [2020-10-29 09:12:18,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:12:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 170 transitions. [2020-10-29 09:12:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 09:12:18,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:18,580 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:18,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 09:12:18,581 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:18,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:18,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1900720248, now seen corresponding path program 17 times [2020-10-29 09:12:18,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:18,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976906205] [2020-10-29 09:12:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1818 [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:20,935 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-29 09:12:21,090 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-29 09:12:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:21,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:21,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:21,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:12:21,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:21,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:21,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:21,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:21,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976906205] [2020-10-29 09:12:21,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:21,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:12:21,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392831408] [2020-10-29 09:12:21,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:12:21,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:21,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:12:21,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:12:21,745 INFO L87 Difference]: Start difference. First operand 166 states and 170 transitions. Second operand 19 states. [2020-10-29 09:12:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:23,557 INFO L93 Difference]: Finished difference Result 210 states and 214 transitions. [2020-10-29 09:12:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:12:23,557 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 115 [2020-10-29 09:12:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:23,559 INFO L225 Difference]: With dead ends: 210 [2020-10-29 09:12:23,559 INFO L226 Difference]: Without dead ends: 206 [2020-10-29 09:12:23,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:12:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-29 09:12:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 166. [2020-10-29 09:12:23,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-29 09:12:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2020-10-29 09:12:23,583 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 115 [2020-10-29 09:12:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:23,584 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 170 transitions. [2020-10-29 09:12:23,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:12:23,584 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 170 transitions. [2020-10-29 09:12:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 09:12:23,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:23,585 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:23,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 09:12:23,585 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1617475466, now seen corresponding path program 18 times [2020-10-29 09:12:23,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:23,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946588485] [2020-10-29 09:12:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:23,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 09:12:25,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:26,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:26,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:26,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:26,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:12:26,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:26,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 24 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:26,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946588485] [2020-10-29 09:12:26,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:26,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:12:26,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143867161] [2020-10-29 09:12:26,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:12:26,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:26,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:12:26,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:12:26,345 INFO L87 Difference]: Start difference. First operand 166 states and 170 transitions. Second operand 19 states. [2020-10-29 09:12:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:28,393 INFO L93 Difference]: Finished difference Result 220 states and 224 transitions. [2020-10-29 09:12:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:12:28,393 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-29 09:12:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:28,395 INFO L225 Difference]: With dead ends: 220 [2020-10-29 09:12:28,395 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 09:12:28,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:12:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 09:12:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-29 09:12:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 09:12:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-10-29 09:12:28,415 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 122 [2020-10-29 09:12:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:28,415 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-10-29 09:12:28,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:12:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-10-29 09:12:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 09:12:28,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:28,417 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:28,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 09:12:28,417 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:28,417 INFO L82 PathProgramCache]: Analyzing trace with hash -960415292, now seen corresponding path program 19 times [2020-10-29 09:12:28,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:28,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536484013] [2020-10-29 09:12:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 09:12:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:31,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:31,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:31,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:12:31,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:31,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:31,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536484013] [2020-10-29 09:12:31,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:31,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:12:31,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460626655] [2020-10-29 09:12:31,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:12:31,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:31,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:12:31,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:12:31,490 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 20 states. [2020-10-29 09:12:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:33,739 INFO L93 Difference]: Finished difference Result 228 states and 233 transitions. [2020-10-29 09:12:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:12:33,740 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 123 [2020-10-29 09:12:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:33,742 INFO L225 Difference]: With dead ends: 228 [2020-10-29 09:12:33,742 INFO L226 Difference]: Without dead ends: 224 [2020-10-29 09:12:33,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:12:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-29 09:12:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 175. [2020-10-29 09:12:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-29 09:12:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2020-10-29 09:12:33,760 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 123 [2020-10-29 09:12:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:33,760 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2020-10-29 09:12:33,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:12:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2020-10-29 09:12:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 09:12:33,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:33,761 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:33,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 09:12:33,761 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:33,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:33,762 INFO L82 PathProgramCache]: Analyzing trace with hash -370166000, now seen corresponding path program 20 times [2020-10-29 09:12:33,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:33,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434786622] [2020-10-29 09:12:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:33,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:36,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:36,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 09:12:36,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3105 [2020-10-29 09:12:36,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:36,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:12:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 09:12:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:37,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:37,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:37,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:12:37,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:37,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:38,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434786622] [2020-10-29 09:12:38,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:38,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:12:38,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847829848] [2020-10-29 09:12:38,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:12:38,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:38,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:12:38,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:12:38,200 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand 20 states. [2020-10-29 09:12:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:40,480 INFO L93 Difference]: Finished difference Result 236 states and 241 transitions. [2020-10-29 09:12:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:12:40,480 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 131 [2020-10-29 09:12:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:40,482 INFO L225 Difference]: With dead ends: 236 [2020-10-29 09:12:40,482 INFO L226 Difference]: Without dead ends: 232 [2020-10-29 09:12:40,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:12:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-29 09:12:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 183. [2020-10-29 09:12:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-29 09:12:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2020-10-29 09:12:40,517 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 131 [2020-10-29 09:12:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:40,517 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2020-10-29 09:12:40,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:12:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2020-10-29 09:12:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 09:12:40,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:40,519 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:40,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 09:12:40,519 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:40,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:40,520 INFO L82 PathProgramCache]: Analyzing trace with hash -948527510, now seen corresponding path program 21 times [2020-10-29 09:12:40,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:40,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124113824] [2020-10-29 09:12:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:43,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 09:12:43,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2450 [2020-10-29 09:12:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:43,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:12:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 09:12:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:43,687 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-29 09:12:43,872 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-29 09:12:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:44,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:44,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:44,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:12:44,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:44,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:44,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124113824] [2020-10-29 09:12:44,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:44,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:12:44,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330554448] [2020-10-29 09:12:44,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:12:44,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:44,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:12:44,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:12:44,833 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand 21 states. [2020-10-29 09:12:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:47,149 INFO L93 Difference]: Finished difference Result 311 states and 318 transitions. [2020-10-29 09:12:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:12:47,150 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 132 [2020-10-29 09:12:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:47,152 INFO L225 Difference]: With dead ends: 311 [2020-10-29 09:12:47,152 INFO L226 Difference]: Without dead ends: 307 [2020-10-29 09:12:47,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:12:47,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-29 09:12:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 212. [2020-10-29 09:12:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-29 09:12:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 218 transitions. [2020-10-29 09:12:47,182 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 218 transitions. Word has length 132 [2020-10-29 09:12:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:47,182 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 218 transitions. [2020-10-29 09:12:47,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:12:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 218 transitions. [2020-10-29 09:12:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 09:12:47,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:47,183 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:47,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 09:12:47,184 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:47,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1839343708, now seen corresponding path program 22 times [2020-10-29 09:12:47,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:47,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34842567] [2020-10-29 09:12:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2145 [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 09:12:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:49,839 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-29 09:12:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 28 proven. 368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:50,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34842567] [2020-10-29 09:12:50,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:50,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:12:50,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508424229] [2020-10-29 09:12:50,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:12:50,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:50,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:12:50,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:12:50,724 INFO L87 Difference]: Start difference. First operand 212 states and 218 transitions. Second operand 21 states. [2020-10-29 09:12:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:12:53,475 INFO L93 Difference]: Finished difference Result 274 states and 280 transitions. [2020-10-29 09:12:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:12:53,476 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 139 [2020-10-29 09:12:53,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:12:53,478 INFO L225 Difference]: With dead ends: 274 [2020-10-29 09:12:53,478 INFO L226 Difference]: Without dead ends: 184 [2020-10-29 09:12:53,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:12:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-29 09:12:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2020-10-29 09:12:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-29 09:12:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 188 transitions. [2020-10-29 09:12:53,497 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 188 transitions. Word has length 139 [2020-10-29 09:12:53,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:12:53,497 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 188 transitions. [2020-10-29 09:12:53,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:12:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 188 transitions. [2020-10-29 09:12:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 09:12:53,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:12:53,498 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:12:53,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 09:12:53,498 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:12:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:12:53,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1163990454, now seen corresponding path program 23 times [2020-10-29 09:12:53,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:12:53,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079339088] [2020-10-29 09:12:53,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:12:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:56,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:56,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 09:12:56,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:12:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2564 [2020-10-29 09:12:56,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:56,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:12:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:12:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 09:12:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:56,749 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-29 09:12:57,060 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-29 09:12:57,319 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-29 09:12:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:12:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:12:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:12:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:12:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:12:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:12:58,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079339088] [2020-10-29 09:12:58,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:12:58,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:12:58,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687840488] [2020-10-29 09:12:58,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:12:58,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:12:58,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:12:58,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:12:58,167 INFO L87 Difference]: Start difference. First operand 184 states and 188 transitions. Second operand 22 states. [2020-10-29 09:13:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:01,148 INFO L93 Difference]: Finished difference Result 245 states and 250 transitions. [2020-10-29 09:13:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:13:01,149 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-29 09:13:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:01,151 INFO L225 Difference]: With dead ends: 245 [2020-10-29 09:13:01,151 INFO L226 Difference]: Without dead ends: 241 [2020-10-29 09:13:01,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:13:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-29 09:13:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 192. [2020-10-29 09:13:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-29 09:13:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2020-10-29 09:13:01,175 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 140 [2020-10-29 09:13:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:01,176 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2020-10-29 09:13:01,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:13:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2020-10-29 09:13:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 09:13:01,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:01,177 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:01,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 09:13:01,177 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:01,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:01,177 INFO L82 PathProgramCache]: Analyzing trace with hash -634317692, now seen corresponding path program 24 times [2020-10-29 09:13:01,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:01,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093326897] [2020-10-29 09:13:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:04,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:04,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 09:13:04,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2868 [2020-10-29 09:13:04,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:04,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 09:13:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 09:13:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:05,233 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-29 09:13:05,477 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-29 09:13:06,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:06,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:06,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:06,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:13:06,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:06,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 9 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:06,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093326897] [2020-10-29 09:13:06,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:06,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:13:06,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142706327] [2020-10-29 09:13:06,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:13:06,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:06,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:13:06,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:13:06,381 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand 22 states. [2020-10-29 09:13:07,336 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-29 09:13:07,591 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-29 09:13:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:08,842 INFO L93 Difference]: Finished difference Result 244 states and 248 transitions. [2020-10-29 09:13:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:13:08,843 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 141 [2020-10-29 09:13:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:08,845 INFO L225 Difference]: With dead ends: 244 [2020-10-29 09:13:08,845 INFO L226 Difference]: Without dead ends: 240 [2020-10-29 09:13:08,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:13:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-29 09:13:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 192. [2020-10-29 09:13:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-29 09:13:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2020-10-29 09:13:08,867 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 141 [2020-10-29 09:13:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:08,867 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2020-10-29 09:13:08,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:13:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2020-10-29 09:13:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 09:13:08,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:08,868 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:08,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 09:13:08,868 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:08,869 INFO L82 PathProgramCache]: Analyzing trace with hash 221610242, now seen corresponding path program 25 times [2020-10-29 09:13:08,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:08,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754758055] [2020-10-29 09:13:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:08,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:11,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3084 [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 09:13:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:12,829 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-29 09:13:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:13,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:13,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:13,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:13:13,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:13,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:13,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:13,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754758055] [2020-10-29 09:13:13,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:13,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:13:13,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217307369] [2020-10-29 09:13:13,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:13:13,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:13,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:13:13,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:13:13,894 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand 22 states. [2020-10-29 09:13:15,276 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-29 09:13:16,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:16,931 INFO L93 Difference]: Finished difference Result 261 states and 266 transitions. [2020-10-29 09:13:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:13:16,932 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2020-10-29 09:13:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:16,934 INFO L225 Difference]: With dead ends: 261 [2020-10-29 09:13:16,934 INFO L226 Difference]: Without dead ends: 257 [2020-10-29 09:13:16,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:13:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-29 09:13:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 200. [2020-10-29 09:13:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-29 09:13:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2020-10-29 09:13:16,967 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 148 [2020-10-29 09:13:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:16,969 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 204 transitions. [2020-10-29 09:13:16,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:13:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 204 transitions. [2020-10-29 09:13:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 09:13:16,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:16,970 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:16,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 09:13:16,970 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:16,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:16,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1741106736, now seen corresponding path program 26 times [2020-10-29 09:13:16,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:16,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217789900] [2020-10-29 09:13:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:20,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:20,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 09:13:20,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3251 [2020-10-29 09:13:20,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:20,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 09:13:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 09:13:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:21,406 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-10-29 09:13:21,614 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2020-10-29 09:13:21,758 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 09:13:22,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:22,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:22,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:13:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:22,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:22,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217789900] [2020-10-29 09:13:22,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:22,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:13:22,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285142547] [2020-10-29 09:13:22,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:13:22,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:22,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:13:22,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:13:22,795 INFO L87 Difference]: Start difference. First operand 200 states and 204 transitions. Second operand 23 states. [2020-10-29 09:13:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:25,471 INFO L93 Difference]: Finished difference Result 260 states and 264 transitions. [2020-10-29 09:13:25,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:13:25,472 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 149 [2020-10-29 09:13:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:25,474 INFO L225 Difference]: With dead ends: 260 [2020-10-29 09:13:25,474 INFO L226 Difference]: Without dead ends: 256 [2020-10-29 09:13:25,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:13:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-29 09:13:25,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 200. [2020-10-29 09:13:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-29 09:13:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2020-10-29 09:13:25,504 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 149 [2020-10-29 09:13:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:25,504 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 204 transitions. [2020-10-29 09:13:25,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:13:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 204 transitions. [2020-10-29 09:13:25,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 09:13:25,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:25,505 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:25,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 09:13:25,506 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:25,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:25,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1606410318, now seen corresponding path program 27 times [2020-10-29 09:13:25,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:25,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049220479] [2020-10-29 09:13:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:25,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:28,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 09:13:28,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3199 [2020-10-29 09:13:28,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:28,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 09:13:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 09:13:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:30,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:30,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 32 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:30,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049220479] [2020-10-29 09:13:30,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:30,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:13:30,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524139198] [2020-10-29 09:13:30,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:13:30,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:30,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:13:30,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:13:30,475 INFO L87 Difference]: Start difference. First operand 200 states and 204 transitions. Second operand 23 states. [2020-10-29 09:13:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:33,950 INFO L93 Difference]: Finished difference Result 270 states and 274 transitions. [2020-10-29 09:13:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:13:33,950 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 156 [2020-10-29 09:13:33,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:33,952 INFO L225 Difference]: With dead ends: 270 [2020-10-29 09:13:33,952 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 09:13:33,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=120, Invalid=1520, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 09:13:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 09:13:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-29 09:13:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-29 09:13:33,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2020-10-29 09:13:33,981 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 156 [2020-10-29 09:13:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:33,982 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2020-10-29 09:13:33,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:13:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2020-10-29 09:13:33,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 09:13:33,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:33,983 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:33,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 09:13:33,983 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:33,984 INFO L82 PathProgramCache]: Analyzing trace with hash -377191652, now seen corresponding path program 28 times [2020-10-29 09:13:33,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:33,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238144109] [2020-10-29 09:13:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:37,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:37,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 09:13:37,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3419 [2020-10-29 09:13:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:37,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 09:13:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 09:13:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:38,333 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-29 09:13:38,490 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 09:13:38,633 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-29 09:13:39,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:39,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:39,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:39,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:13:39,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:39,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:39,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238144109] [2020-10-29 09:13:39,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:39,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:13:39,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547448401] [2020-10-29 09:13:39,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:13:39,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:39,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:13:39,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:13:39,680 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 24 states. [2020-10-29 09:13:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:43,466 INFO L93 Difference]: Finished difference Result 278 states and 283 transitions. [2020-10-29 09:13:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 09:13:43,467 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 157 [2020-10-29 09:13:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:43,469 INFO L225 Difference]: With dead ends: 278 [2020-10-29 09:13:43,469 INFO L226 Difference]: Without dead ends: 274 [2020-10-29 09:13:43,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=122, Invalid=1438, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:13:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-29 09:13:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 209. [2020-10-29 09:13:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-29 09:13:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2020-10-29 09:13:43,506 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 157 [2020-10-29 09:13:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:43,507 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2020-10-29 09:13:43,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:13:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2020-10-29 09:13:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 09:13:43,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:43,508 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:43,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-29 09:13:43,508 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:43,509 INFO L82 PathProgramCache]: Analyzing trace with hash 350234728, now seen corresponding path program 29 times [2020-10-29 09:13:43,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:43,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659861437] [2020-10-29 09:13:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:43,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:47,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3993 [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 09:13:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:48,395 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-29 09:13:48,651 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-29 09:13:48,953 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-29 09:13:49,151 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-29 09:13:49,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:49,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:49,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:49,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:49,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:13:49,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:49,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:50,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659861437] [2020-10-29 09:13:50,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:50,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:13:50,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632159318] [2020-10-29 09:13:50,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:13:50,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:50,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:13:50,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:13:50,405 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand 24 states. [2020-10-29 09:13:52,273 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-29 09:13:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:54,378 INFO L93 Difference]: Finished difference Result 286 states and 291 transitions. [2020-10-29 09:13:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:13:54,379 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 165 [2020-10-29 09:13:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:54,382 INFO L225 Difference]: With dead ends: 286 [2020-10-29 09:13:54,382 INFO L226 Difference]: Without dead ends: 282 [2020-10-29 09:13:54,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:13:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-29 09:13:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 217. [2020-10-29 09:13:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-29 09:13:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2020-10-29 09:13:54,426 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 165 [2020-10-29 09:13:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:54,427 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2020-10-29 09:13:54,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:13:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2020-10-29 09:13:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 09:13:54,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:54,428 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:54,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-29 09:13:54,429 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:54,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:54,429 INFO L82 PathProgramCache]: Analyzing trace with hash -663929278, now seen corresponding path program 30 times [2020-10-29 09:13:54,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:54,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264505381] [2020-10-29 09:13:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:54,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:58,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:58,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 09:13:58,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:58,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4427 [2020-10-29 09:13:58,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:58,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:13:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 09:13:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:59,958 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-29 09:14:00,201 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-29 09:14:00,484 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-29 09:14:00,783 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-10-29 09:14:01,089 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-29 09:14:01,304 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-29 09:14:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:02,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:02,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:02,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:02,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:02,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 0 proven. 609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:02,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264505381] [2020-10-29 09:14:02,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:02,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 09:14:02,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731894316] [2020-10-29 09:14:02,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 09:14:02,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:02,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 09:14:02,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:14:02,486 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand 25 states. [2020-10-29 09:14:04,817 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 09:14:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:07,221 INFO L93 Difference]: Finished difference Result 377 states and 384 transitions. [2020-10-29 09:14:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 09:14:07,222 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 166 [2020-10-29 09:14:07,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:07,224 INFO L225 Difference]: With dead ends: 377 [2020-10-29 09:14:07,224 INFO L226 Difference]: Without dead ends: 373 [2020-10-29 09:14:07,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:14:07,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-29 09:14:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 246. [2020-10-29 09:14:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-29 09:14:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 252 transitions. [2020-10-29 09:14:07,269 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 252 transitions. Word has length 166 [2020-10-29 09:14:07,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:07,269 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 252 transitions. [2020-10-29 09:14:07,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 09:14:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 252 transitions. [2020-10-29 09:14:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 09:14:07,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:07,271 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:07,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-29 09:14:07,271 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:07,271 INFO L82 PathProgramCache]: Analyzing trace with hash -719863372, now seen corresponding path program 31 times [2020-10-29 09:14:07,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:07,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071039206] [2020-10-29 09:14:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:07,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:07,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:11,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:11,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 09:14:11,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:11,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4410 [2020-10-29 09:14:11,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:11,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:14:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 09:14:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:12,693 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-29 09:14:13,014 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-29 09:14:13,240 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-29 09:14:14,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:14,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:14,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:14,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:14,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:14,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:14,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:14,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:14,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:14,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:14,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 36 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:14,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071039206] [2020-10-29 09:14:14,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:14,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 09:14:14,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819680012] [2020-10-29 09:14:14,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 09:14:14,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:14,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 09:14:14,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:14:14,491 INFO L87 Difference]: Start difference. First operand 246 states and 252 transitions. Second operand 25 states. [2020-10-29 09:14:16,470 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 09:14:16,847 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 09:14:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:19,338 INFO L93 Difference]: Finished difference Result 324 states and 330 transitions. [2020-10-29 09:14:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:14:19,339 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 173 [2020-10-29 09:14:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:19,340 INFO L225 Difference]: With dead ends: 324 [2020-10-29 09:14:19,340 INFO L226 Difference]: Without dead ends: 218 [2020-10-29 09:14:19,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:14:19,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-29 09:14:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-29 09:14:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-29 09:14:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 222 transitions. [2020-10-29 09:14:19,380 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 222 transitions. Word has length 173 [2020-10-29 09:14:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:19,381 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 222 transitions. [2020-10-29 09:14:19,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 09:14:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 222 transitions. [2020-10-29 09:14:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 09:14:19,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:19,382 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:19,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-29 09:14:19,382 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:19,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1694081650, now seen corresponding path program 32 times [2020-10-29 09:14:19,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:19,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981639555] [2020-10-29 09:14:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:24,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:24,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 09:14:24,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4837 [2020-10-29 09:14:24,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:24,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 09:14:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 09:14:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:25,662 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-29 09:14:25,974 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-10-29 09:14:26,309 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-10-29 09:14:27,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:27,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:27,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:27,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:27,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:27,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:27,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 0 proven. 671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:27,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981639555] [2020-10-29 09:14:27,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:27,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 09:14:27,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798569911] [2020-10-29 09:14:27,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 09:14:27,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:27,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 09:14:27,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:14:27,724 INFO L87 Difference]: Start difference. First operand 218 states and 222 transitions. Second operand 26 states. [2020-10-29 09:14:29,869 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 09:14:30,426 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-29 09:14:30,622 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-29 09:14:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:32,654 INFO L93 Difference]: Finished difference Result 295 states and 300 transitions. [2020-10-29 09:14:32,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 09:14:32,655 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 174 [2020-10-29 09:14:32,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:32,657 INFO L225 Difference]: With dead ends: 295 [2020-10-29 09:14:32,657 INFO L226 Difference]: Without dead ends: 291 [2020-10-29 09:14:32,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=134, Invalid=1758, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:14:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-29 09:14:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 226. [2020-10-29 09:14:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-29 09:14:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 230 transitions. [2020-10-29 09:14:32,701 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 230 transitions. Word has length 174 [2020-10-29 09:14:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:32,702 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 230 transitions. [2020-10-29 09:14:32,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 09:14:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 230 transitions. [2020-10-29 09:14:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 09:14:32,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:32,703 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:32,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-29 09:14:32,704 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash 386772444, now seen corresponding path program 33 times [2020-10-29 09:14:32,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:32,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193026696] [2020-10-29 09:14:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:33,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:37,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 09:14:37,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4987 [2020-10-29 09:14:37,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:37,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 09:14:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 09:14:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0