/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-queue-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:50:12,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:50:12,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:50:12,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:50:12,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:50:12,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:50:12,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:50:12,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:50:12,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:50:12,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:50:12,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:50:12,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:50:12,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:50:12,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:50:12,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:50:12,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:50:12,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:50:12,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:50:12,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:50:12,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:50:12,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:50:12,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:50:12,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:50:12,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:50:12,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:50:12,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:50:12,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:50:12,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:50:12,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:50:12,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:50:12,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:50:12,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:50:12,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:50:12,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:50:12,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:50:12,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:50:12,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:50:12,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:50:12,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:50:12,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:50:12,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:50:12,709 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 [2020-10-14 04:50:12,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:50:12,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:50:12,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:50:12,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:50:12,758 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:50:12,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:50:12,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:50:12,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:50:12,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:50:12,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:50:12,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:50:12,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:50:12,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:50:12,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:50:12,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:50:12,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:50:12,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:50:12,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:50:12,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:50:12,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:50:12,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:50:12,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:50:12,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:50:12,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:50:12,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:50:12,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:50:12,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:50:12,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:50:12,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:50:12,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:50:13,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:50:13,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:50:13,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:50:13,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:50:13,130 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:50:13,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-queue-1.i [2020-10-14 04:50:13,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ad7f7ee8/bac3b2449d5046488f95dfeb1104bd9b/FLAG29834badc [2020-10-14 04:50:13,781 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:50:13,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-queue-1.i [2020-10-14 04:50:13,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ad7f7ee8/bac3b2449d5046488f95dfeb1104bd9b/FLAG29834badc [2020-10-14 04:50:14,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ad7f7ee8/bac3b2449d5046488f95dfeb1104bd9b [2020-10-14 04:50:14,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:50:14,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:50:14,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:50:14,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:50:14,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:50:14,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b376011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14, skipping insertion in model container [2020-10-14 04:50:14,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:50:14,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:50:14,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:50:14,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:50:14,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:50:14,726 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:50:14,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14 WrapperNode [2020-10-14 04:50:14,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:50:14,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:50:14,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:50:14,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:50:14,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (1/1) ... [2020-10-14 04:50:14,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:50:14,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:50:14,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:50:14,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:50:14,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (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 [2020-10-14 04:50:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:50:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:50:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:50:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:50:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:50:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:50:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:50:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:50:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:50:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:50:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:50:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:50:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:50:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:50:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:50:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:50:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:50:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:50:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:50:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:50:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:50:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:50:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:50:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:50:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:50:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:50:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:50:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:50:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:50:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:50:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:50:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:50:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:50:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:50:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:50:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:50:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:50:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:50:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:50:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:50:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:50:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:50:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:50:14,875 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:50:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:50:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:50:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:50:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:50:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:50:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:50:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:50:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:50:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:50:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:50:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:50:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:50:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:50:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:50:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:50:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:50:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:50:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:50:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:50:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:50:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:50:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:50:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:50:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:50:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:50:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:50:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:50:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:50:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:50:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:50:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:50:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:50:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:50:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:50:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:50:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:50:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:50:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:50:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:50:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:50:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:50:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:50:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:50:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:50:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:50:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:50:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:50:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:50:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:50:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:50:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:50:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:50:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:50:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:50:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:50:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:50:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:50:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:50:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:50:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:50:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:50:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:50:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:50:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:50:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:50:15,502 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:50:15,503 INFO L295 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-14 04:50:15,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:50:15 BoogieIcfgContainer [2020-10-14 04:50:15,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:50:15,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:50:15,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:50:15,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:50:15,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:50:14" (1/3) ... [2020-10-14 04:50:15,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6f9bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:50:15, skipping insertion in model container [2020-10-14 04:50:15,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:50:14" (2/3) ... [2020-10-14 04:50:15,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6f9bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:50:15, skipping insertion in model container [2020-10-14 04:50:15,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:50:15" (3/3) ... [2020-10-14 04:50:15,517 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2020-10-14 04:50:15,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:50:15,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2020-10-14 04:50:15,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2020-10-14 04:50:15,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:50:15,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:50:15,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:50:15,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:50:15,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:50:15,579 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:50:15,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:50:15,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:50:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-14 04:50:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-14 04:50:15,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:15,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:15,613 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:15,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash 786631415, now seen corresponding path program 1 times [2020-10-14 04:50:15,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:15,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189449554] [2020-10-14 04:50:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:15,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:50:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 04:50:15,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:15,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:50:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:50:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:16,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:16,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:50:16,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:16,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:16,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:16,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189449554] [2020-10-14 04:50:16,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:16,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:50:16,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052334722] [2020-10-14 04:50:16,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:50:16,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:16,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:50:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:50:16,059 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2020-10-14 04:50:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:16,317 INFO L93 Difference]: Finished difference Result 174 states and 284 transitions. [2020-10-14 04:50:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:50:16,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-14 04:50:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:16,332 INFO L225 Difference]: With dead ends: 174 [2020-10-14 04:50:16,333 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 04:50:16,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:50:16,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 04:50:16,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-14 04:50:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 04:50:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-10-14 04:50:16,384 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 9 [2020-10-14 04:50:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:16,384 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-10-14 04:50:16,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:50:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-10-14 04:50:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 04:50:16,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:16,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:16,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:50:16,386 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:16,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:16,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1385985618, now seen corresponding path program 1 times [2020-10-14 04:50:16,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:16,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361608803] [2020-10-14 04:50:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:16,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:16,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:50:16,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 04:50:16,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:16,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:50:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:16,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:16,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:16,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:16,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:50:16,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:16,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:16,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:16,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361608803] [2020-10-14 04:50:16,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:16,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:16,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853686769] [2020-10-14 04:50:16,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:16,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:16,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:16,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:16,555 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 4 states. [2020-10-14 04:50:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:16,743 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-14 04:50:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:16,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-14 04:50:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:16,745 INFO L225 Difference]: With dead ends: 84 [2020-10-14 04:50:16,745 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 04:50:16,747 INFO L675 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 [2020-10-14 04:50:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 04:50:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-14 04:50:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 04:50:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-14 04:50:16,758 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 10 [2020-10-14 04:50:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:16,758 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-14 04:50:16,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:16,759 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-14 04:50:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 04:50:16,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:16,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:16,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:50:16,760 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:16,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1923530661, now seen corresponding path program 1 times [2020-10-14 04:50:16,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:16,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276315898] [2020-10-14 04:50:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:16,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:16,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:50:16,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:50:16,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:16,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:50:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:50:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:16,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:16,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:50:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:16,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:16,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:16,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:16,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276315898] [2020-10-14 04:50:16,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:16,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:16,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129893138] [2020-10-14 04:50:16,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:16,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:16,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:16,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:16,917 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-10-14 04:50:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:17,103 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-14 04:50:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:17,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 04:50:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:17,105 INFO L225 Difference]: With dead ends: 74 [2020-10-14 04:50:17,105 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 04:50:17,107 INFO L675 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 [2020-10-14 04:50:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 04:50:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-14 04:50:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 04:50:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-14 04:50:17,125 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 13 [2020-10-14 04:50:17,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:17,125 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-14 04:50:17,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:17,125 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-14 04:50:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 04:50:17,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:17,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:17,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:50:17,129 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:17,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1449483421, now seen corresponding path program 1 times [2020-10-14 04:50:17,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:17,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976332815] [2020-10-14 04:50:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:17,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:50:17,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 04:50:17,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:17,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:50:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:17,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:17,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:50:17,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:17,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:17,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:17,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976332815] [2020-10-14 04:50:17,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:17,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:17,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357190557] [2020-10-14 04:50:17,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:17,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:17,279 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 4 states. [2020-10-14 04:50:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:17,470 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2020-10-14 04:50:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:17,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-14 04:50:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:17,472 INFO L225 Difference]: With dead ends: 157 [2020-10-14 04:50:17,472 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 04:50:17,475 INFO L675 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 [2020-10-14 04:50:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 04:50:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-14 04:50:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 04:50:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-10-14 04:50:17,495 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 16 [2020-10-14 04:50:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:17,496 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-10-14 04:50:17,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-10-14 04:50:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:50:17,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:17,499 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] [2020-10-14 04:50:17,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:50:17,500 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1095322203, now seen corresponding path program 1 times [2020-10-14 04:50:17,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:17,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167214505] [2020-10-14 04:50:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:17,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:17,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:50:17,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:50:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 04:50:17,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:17,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 04:50:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:50:17,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:17,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:17,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:17,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:17,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:17,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:17,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:17,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167214505] [2020-10-14 04:50:17,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:17,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:17,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67185239] [2020-10-14 04:50:17,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:17,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:17,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:17,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:17,837 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-10-14 04:50:17,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:17,960 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-14 04:50:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:17,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 04:50:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:17,962 INFO L225 Difference]: With dead ends: 83 [2020-10-14 04:50:17,962 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 04:50:17,962 INFO L675 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 [2020-10-14 04:50:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 04:50:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-14 04:50:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 04:50:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-10-14 04:50:17,975 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 21 [2020-10-14 04:50:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:17,975 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-10-14 04:50:17,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:17,975 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-10-14 04:50:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:50:17,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:17,977 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] [2020-10-14 04:50:17,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:50:17,977 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1095324125, now seen corresponding path program 1 times [2020-10-14 04:50:17,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:17,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119243422] [2020-10-14 04:50:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:50:18,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 04:50:18,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:50:18,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:18,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:50:18,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:18,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:18,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:18,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:18,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119243422] [2020-10-14 04:50:18,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:18,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:50:18,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062869630] [2020-10-14 04:50:18,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:50:18,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:18,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:50:18,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:50:18,179 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 5 states. [2020-10-14 04:50:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:18,329 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-10-14 04:50:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:50:18,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-14 04:50:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:18,330 INFO L225 Difference]: With dead ends: 101 [2020-10-14 04:50:18,331 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 04:50:18,331 INFO L675 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 [2020-10-14 04:50:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 04:50:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-14 04:50:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 04:50:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-10-14 04:50:18,338 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 21 [2020-10-14 04:50:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:18,339 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-10-14 04:50:18,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:50:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-10-14 04:50:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 04:50:18,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:18,340 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] [2020-10-14 04:50:18,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:50:18,340 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:18,341 INFO L82 PathProgramCache]: Analyzing trace with hash -648846271, now seen corresponding path program 1 times [2020-10-14 04:50:18,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:18,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252279249] [2020-10-14 04:50:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 04:50:18,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:50:18,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:50:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:50:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:18,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:18,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:18,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:18,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252279249] [2020-10-14 04:50:18,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:18,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:50:18,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79957786] [2020-10-14 04:50:18,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:50:18,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:18,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:50:18,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:50:18,510 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 7 states. [2020-10-14 04:50:18,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:18,731 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2020-10-14 04:50:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:18,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-14 04:50:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:18,733 INFO L225 Difference]: With dead ends: 140 [2020-10-14 04:50:18,733 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 04:50:18,734 INFO L675 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 [2020-10-14 04:50:18,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 04:50:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 89. [2020-10-14 04:50:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 04:50:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-14 04:50:18,743 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 23 [2020-10-14 04:50:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:18,743 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-14 04:50:18,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:50:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-14 04:50:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:50:18,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:18,745 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] [2020-10-14 04:50:18,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:50:18,745 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1678311806, now seen corresponding path program 1 times [2020-10-14 04:50:18,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:18,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703663058] [2020-10-14 04:50:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:50:18,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:50:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 04:50:18,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 04:50:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:50:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:50:18,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:18,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703663058] [2020-10-14 04:50:18,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:18,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:18,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319845267] [2020-10-14 04:50:18,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:18,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:18,946 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 4 states. [2020-10-14 04:50:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:19,108 INFO L93 Difference]: Finished difference Result 181 states and 209 transitions. [2020-10-14 04:50:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:19,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 04:50:19,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:19,110 INFO L225 Difference]: With dead ends: 181 [2020-10-14 04:50:19,110 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 04:50:19,111 INFO L675 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 [2020-10-14 04:50:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 04:50:19,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2020-10-14 04:50:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 04:50:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2020-10-14 04:50:19,119 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 24 [2020-10-14 04:50:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:19,120 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2020-10-14 04:50:19,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2020-10-14 04:50:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 04:50:19,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:19,121 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] [2020-10-14 04:50:19,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:50:19,122 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:19,122 INFO L82 PathProgramCache]: Analyzing trace with hash -795743119, now seen corresponding path program 1 times [2020-10-14 04:50:19,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:19,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937574530] [2020-10-14 04:50:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:19,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:19,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:50:19,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 04:50:19,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:19,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 04:50:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:50:19,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:19,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:19,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:19,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:19,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:19,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:19,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:19,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:50:19,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937574530] [2020-10-14 04:50:19,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:19,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:19,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940080114] [2020-10-14 04:50:19,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:19,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:19,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:19,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:19,340 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 4 states. [2020-10-14 04:50:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:19,494 INFO L93 Difference]: Finished difference Result 179 states and 201 transitions. [2020-10-14 04:50:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:19,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 04:50:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:19,496 INFO L225 Difference]: With dead ends: 179 [2020-10-14 04:50:19,496 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 04:50:19,497 INFO L675 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 [2020-10-14 04:50:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 04:50:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2020-10-14 04:50:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 04:50:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-10-14 04:50:19,503 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 31 [2020-10-14 04:50:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:19,504 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-10-14 04:50:19,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-10-14 04:50:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:50:19,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:19,505 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] [2020-10-14 04:50:19,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:50:19,506 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:19,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1419476814, now seen corresponding path program 1 times [2020-10-14 04:50:19,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:19,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302481393] [2020-10-14 04:50:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:19,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:19,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:19,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:50:19,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 04:50:19,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:19,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:50:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:19,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:19,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:19,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:19,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:19,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:19,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:19,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:19,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302481393] [2020-10-14 04:50:19,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:19,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:50:19,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364823370] [2020-10-14 04:50:19,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:50:19,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:19,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:50:19,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:50:19,733 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 8 states. [2020-10-14 04:50:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:19,939 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2020-10-14 04:50:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:19,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-14 04:50:19,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:19,941 INFO L225 Difference]: With dead ends: 87 [2020-10-14 04:50:19,941 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 04:50:19,942 INFO L675 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 [2020-10-14 04:50:19,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 04:50:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-14 04:50:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 04:50:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-10-14 04:50:19,947 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 32 [2020-10-14 04:50:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:19,947 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-10-14 04:50:19,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:50:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-10-14 04:50:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:19,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:19,949 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] [2020-10-14 04:50:19,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:50:19,949 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:19,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:19,950 INFO L82 PathProgramCache]: Analyzing trace with hash 922997175, now seen corresponding path program 1 times [2020-10-14 04:50:19,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:19,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713857018] [2020-10-14 04:50:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:20,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:20,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:20,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 04:50:20,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:20,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:50:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:50:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:20,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:20,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:20,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:20,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:50:20,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:20,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:20,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713857018] [2020-10-14 04:50:20,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:20,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:50:20,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632935198] [2020-10-14 04:50:20,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:50:20,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:20,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:50:20,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:50:20,286 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 8 states. [2020-10-14 04:50:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:20,541 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-14 04:50:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:20,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-14 04:50:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:20,543 INFO L225 Difference]: With dead ends: 108 [2020-10-14 04:50:20,543 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 04:50:20,543 INFO L675 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 [2020-10-14 04:50:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 04:50:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 91. [2020-10-14 04:50:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 04:50:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2020-10-14 04:50:20,550 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 33 [2020-10-14 04:50:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:20,550 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2020-10-14 04:50:20,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:50:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2020-10-14 04:50:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:20,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:20,552 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] [2020-10-14 04:50:20,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:50:20,552 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:20,552 INFO L82 PathProgramCache]: Analyzing trace with hash 699517325, now seen corresponding path program 1 times [2020-10-14 04:50:20,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:20,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646932782] [2020-10-14 04:50:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:20,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:20,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:50:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 04:50:20,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:20,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 04:50:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:50:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:20,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:20,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:20,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:20,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:20,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:20,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:20,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:20,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:20,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:20,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:20,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:50:20,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646932782] [2020-10-14 04:50:20,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:20,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:20,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912587839] [2020-10-14 04:50:20,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:20,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:20,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:20,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:20,797 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 4 states. [2020-10-14 04:50:20,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:20,989 INFO L93 Difference]: Finished difference Result 151 states and 166 transitions. [2020-10-14 04:50:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:20,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-14 04:50:20,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:20,991 INFO L225 Difference]: With dead ends: 151 [2020-10-14 04:50:20,991 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 04:50:20,992 INFO L675 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 [2020-10-14 04:50:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 04:50:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2020-10-14 04:50:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 04:50:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2020-10-14 04:50:20,999 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 33 [2020-10-14 04:50:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:21,000 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2020-10-14 04:50:21,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2020-10-14 04:50:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 04:50:21,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:21,002 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] [2020-10-14 04:50:21,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:50:21,003 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:21,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:21,003 INFO L82 PathProgramCache]: Analyzing trace with hash -610162986, now seen corresponding path program 1 times [2020-10-14 04:50:21,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:21,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960558904] [2020-10-14 04:50:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:21,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:21,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 04:50:21,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 04:50:21,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:21,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:50:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:21,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:21,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:21,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:21,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:21,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:21,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:21,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:21,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:21,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:21,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960558904] [2020-10-14 04:50:21,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:21,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:50:21,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293323944] [2020-10-14 04:50:21,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:50:21,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:21,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:50:21,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:50:21,283 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand 8 states. [2020-10-14 04:50:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:21,544 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-10-14 04:50:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:50:21,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-14 04:50:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:21,545 INFO L225 Difference]: With dead ends: 128 [2020-10-14 04:50:21,545 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 04:50:21,546 INFO L675 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 [2020-10-14 04:50:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 04:50:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2020-10-14 04:50:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 04:50:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2020-10-14 04:50:21,552 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 35 [2020-10-14 04:50:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:21,552 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2020-10-14 04:50:21,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:50:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2020-10-14 04:50:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:50:21,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:21,553 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] [2020-10-14 04:50:21,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:50:21,554 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2040823409, now seen corresponding path program 1 times [2020-10-14 04:50:21,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:21,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781743845] [2020-10-14 04:50:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:21,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:21,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:21,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:50:21,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:21,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 04:50:21,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:21,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 04:50:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:50:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:21,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:21,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:21,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:21,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:21,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:50:21,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781743845] [2020-10-14 04:50:21,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:21,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:21,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739082270] [2020-10-14 04:50:21,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:21,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:21,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:21,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:21,807 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand 4 states. [2020-10-14 04:50:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:21,973 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2020-10-14 04:50:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:21,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-14 04:50:21,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:21,974 INFO L225 Difference]: With dead ends: 137 [2020-10-14 04:50:21,975 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 04:50:21,975 INFO L675 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 [2020-10-14 04:50:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 04:50:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-10-14 04:50:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 04:50:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2020-10-14 04:50:21,981 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 36 [2020-10-14 04:50:21,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:21,981 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2020-10-14 04:50:21,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2020-10-14 04:50:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:50:21,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:21,982 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] [2020-10-14 04:50:21,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:50:21,983 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:21,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1026206209, now seen corresponding path program 1 times [2020-10-14 04:50:21,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:21,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260229172] [2020-10-14 04:50:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:22,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:22,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 04:50:22,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:50:22,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-14 04:50:22,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:22,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:50:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 04:50:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:50:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:22,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:22,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:22,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:22,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:22,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:22,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260229172] [2020-10-14 04:50:22,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:22,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:50:22,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345657712] [2020-10-14 04:50:22,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:50:22,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:22,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:50:22,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:50:22,618 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand 5 states. [2020-10-14 04:50:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:22,772 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2020-10-14 04:50:22,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:50:22,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-14 04:50:22,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:22,773 INFO L225 Difference]: With dead ends: 120 [2020-10-14 04:50:22,774 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 04:50:22,774 INFO L675 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 [2020-10-14 04:50:22,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 04:50:22,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-14 04:50:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 04:50:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2020-10-14 04:50:22,780 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 41 [2020-10-14 04:50:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:22,780 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2020-10-14 04:50:22,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:50:22,781 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2020-10-14 04:50:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:50:22,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:22,781 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] [2020-10-14 04:50:22,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:50:22,782 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:22,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1727270787, now seen corresponding path program 1 times [2020-10-14 04:50:22,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:22,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606001545] [2020-10-14 04:50:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 04:50:22,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 04:50:22,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:22,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:50:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:23,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:23,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:23,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:23,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:23,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:23,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:23,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:23,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606001545] [2020-10-14 04:50:23,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:23,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:23,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135916713] [2020-10-14 04:50:23,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:23,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:23,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:23,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:23,038 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 9 states. [2020-10-14 04:50:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:23,351 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2020-10-14 04:50:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:23,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-14 04:50:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:23,353 INFO L225 Difference]: With dead ends: 129 [2020-10-14 04:50:23,353 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 04:50:23,354 INFO L675 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 [2020-10-14 04:50:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 04:50:23,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-14 04:50:23,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 04:50:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-14 04:50:23,365 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 41 [2020-10-14 04:50:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:23,365 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-14 04:50:23,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-14 04:50:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:50:23,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:23,366 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] [2020-10-14 04:50:23,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:50:23,367 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash -872603692, now seen corresponding path program 1 times [2020-10-14 04:50:23,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:23,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759928038] [2020-10-14 04:50:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:23,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:23,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:50:23,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:23,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 04:50:23,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:23,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:50:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:23,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:23,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:23,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:23,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:23,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759928038] [2020-10-14 04:50:23,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:23,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:23,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854147037] [2020-10-14 04:50:23,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:23,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:23,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:23,723 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 9 states. [2020-10-14 04:50:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:23,899 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2020-10-14 04:50:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:23,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-14 04:50:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:23,901 INFO L225 Difference]: With dead ends: 92 [2020-10-14 04:50:23,901 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 04:50:23,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 04:50:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-14 04:50:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 04:50:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-14 04:50:23,908 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 42 [2020-10-14 04:50:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:23,908 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-14 04:50:23,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-14 04:50:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:50:23,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:23,910 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, 1, 1, 1] [2020-10-14 04:50:23,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:50:23,910 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:23,911 INFO L82 PathProgramCache]: Analyzing trace with hash 869745041, now seen corresponding path program 1 times [2020-10-14 04:50:23,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:23,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332666179] [2020-10-14 04:50:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:24,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:24,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:50:24,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 04:50:24,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:24,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:50:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:24,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:24,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:24,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:24,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:24,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:24,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332666179] [2020-10-14 04:50:24,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:24,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:24,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989028012] [2020-10-14 04:50:24,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:24,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:24,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:24,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:24,435 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 10 states. [2020-10-14 04:50:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:24,770 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2020-10-14 04:50:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:24,771 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-14 04:50:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:24,772 INFO L225 Difference]: With dead ends: 113 [2020-10-14 04:50:24,772 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 04:50:24,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 04:50:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-10-14 04:50:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 04:50:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-14 04:50:24,779 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 44 [2020-10-14 04:50:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:24,780 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-14 04:50:24,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-14 04:50:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:50:24,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:24,780 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] [2020-10-14 04:50:24,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:50:24,782 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:24,783 INFO L82 PathProgramCache]: Analyzing trace with hash 410027869, now seen corresponding path program 1 times [2020-10-14 04:50:24,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:24,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348787742] [2020-10-14 04:50:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:24,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:25,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:25,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:50:25,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:25,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-14 04:50:25,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:25,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 04:50:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:50:25,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:25,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:25,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:25,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:25,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:25,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:25,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:25,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:25,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:25,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 04:50:25,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348787742] [2020-10-14 04:50:25,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:25,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:25,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202452991] [2020-10-14 04:50:25,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:25,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:25,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:25,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:25,094 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 4 states. [2020-10-14 04:50:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:25,246 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2020-10-14 04:50:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:25,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 04:50:25,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:25,248 INFO L225 Difference]: With dead ends: 123 [2020-10-14 04:50:25,249 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 04:50:25,249 INFO L675 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 [2020-10-14 04:50:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 04:50:25,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2020-10-14 04:50:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 04:50:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2020-10-14 04:50:25,258 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 44 [2020-10-14 04:50:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:25,258 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2020-10-14 04:50:25,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2020-10-14 04:50:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:50:25,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:25,259 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] [2020-10-14 04:50:25,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:50:25,259 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:25,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash -479677976, now seen corresponding path program 1 times [2020-10-14 04:50:25,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:25,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849659864] [2020-10-14 04:50:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:25,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:25,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:25,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:50:25,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-14 04:50:25,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:25,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:50:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 04:50:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:50:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:25,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:25,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:25,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:25,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:25,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 04:50:25,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849659864] [2020-10-14 04:50:25,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:25,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:50:25,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403186987] [2020-10-14 04:50:25,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:50:25,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:50:25,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:50:25,696 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand 4 states. [2020-10-14 04:50:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:25,826 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2020-10-14 04:50:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:50:25,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-14 04:50:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:25,827 INFO L225 Difference]: With dead ends: 112 [2020-10-14 04:50:25,828 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 04:50:25,828 INFO L675 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 [2020-10-14 04:50:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 04:50:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2020-10-14 04:50:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 04:50:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-14 04:50:25,834 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 45 [2020-10-14 04:50:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:25,834 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-14 04:50:25,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:50:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-14 04:50:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:50:25,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:25,835 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] [2020-10-14 04:50:25,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:50:25,835 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:25,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1704581452, now seen corresponding path program 1 times [2020-10-14 04:50:25,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:25,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295838922] [2020-10-14 04:50:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:26,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:26,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:50:26,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 04:50:26,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:50:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:26,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:26,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:26,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:26,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:26,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:26,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:26,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:26,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:26,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295838922] [2020-10-14 04:50:26,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:26,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:26,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895498283] [2020-10-14 04:50:26,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:26,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:26,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:26,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:26,183 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 9 states. [2020-10-14 04:50:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:26,448 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2020-10-14 04:50:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:50:26,449 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-14 04:50:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:26,450 INFO L225 Difference]: With dead ends: 88 [2020-10-14 04:50:26,450 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 04:50:26,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 04:50:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-14 04:50:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 04:50:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-10-14 04:50:26,456 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 45 [2020-10-14 04:50:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:26,457 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-10-14 04:50:26,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:26,457 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-10-14 04:50:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:50:26,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:26,458 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] [2020-10-14 04:50:26,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:50:26,459 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:26,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:26,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1791840934, now seen corresponding path program 1 times [2020-10-14 04:50:26,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:26,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625574652] [2020-10-14 04:50:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:26,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:26,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:50:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:26,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 04:50:26,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:26,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:50:26,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:26,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:26,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:26,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:26,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:26,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:26,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625574652] [2020-10-14 04:50:26,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:26,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:26,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251281902] [2020-10-14 04:50:26,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:26,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:26,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:26,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:26,953 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 9 states. [2020-10-14 04:50:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:27,284 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2020-10-14 04:50:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:50:27,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-14 04:50:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:27,287 INFO L225 Difference]: With dead ends: 129 [2020-10-14 04:50:27,287 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 04:50:27,287 INFO L675 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 [2020-10-14 04:50:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 04:50:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2020-10-14 04:50:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 04:50:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2020-10-14 04:50:27,294 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 48 [2020-10-14 04:50:27,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:27,294 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 113 transitions. [2020-10-14 04:50:27,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 113 transitions. [2020-10-14 04:50:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:50:27,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:27,295 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] [2020-10-14 04:50:27,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:50:27,296 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1411094306, now seen corresponding path program 1 times [2020-10-14 04:50:27,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:27,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076160944] [2020-10-14 04:50:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:27,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:27,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:50:27,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 04:50:27,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:27,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:50:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:27,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:27,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:27,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:27,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076160944] [2020-10-14 04:50:27,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:27,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:27,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255612268] [2020-10-14 04:50:27,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:27,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:27,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:27,851 INFO L87 Difference]: Start difference. First operand 110 states and 113 transitions. Second operand 9 states. [2020-10-14 04:50:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:28,286 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2020-10-14 04:50:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:28,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-14 04:50:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:28,288 INFO L225 Difference]: With dead ends: 127 [2020-10-14 04:50:28,289 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 04:50:28,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:28,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 04:50:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2020-10-14 04:50:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 04:50:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-10-14 04:50:28,305 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 51 [2020-10-14 04:50:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:28,306 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-10-14 04:50:28,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-10-14 04:50:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:50:28,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:28,307 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] [2020-10-14 04:50:28,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:50:28,307 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:28,308 INFO L82 PathProgramCache]: Analyzing trace with hash -819002019, now seen corresponding path program 1 times [2020-10-14 04:50:28,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:28,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612083625] [2020-10-14 04:50:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:28,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:28,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:50:28,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 04:50:28,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:28,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:50:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:28,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:28,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:28,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:28,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:28,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:28,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612083625] [2020-10-14 04:50:28,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:28,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:28,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543879832] [2020-10-14 04:50:28,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:28,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:28,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:28,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:28,821 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 10 states. [2020-10-14 04:50:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:29,182 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2020-10-14 04:50:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:29,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-14 04:50:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:29,184 INFO L225 Difference]: With dead ends: 135 [2020-10-14 04:50:29,184 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 04:50:29,185 INFO L675 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 [2020-10-14 04:50:29,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 04:50:29,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2020-10-14 04:50:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 04:50:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2020-10-14 04:50:29,194 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 52 [2020-10-14 04:50:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:29,194 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2020-10-14 04:50:29,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2020-10-14 04:50:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 04:50:29,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:29,195 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] [2020-10-14 04:50:29,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:50:29,196 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:29,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:29,196 INFO L82 PathProgramCache]: Analyzing trace with hash 421512575, now seen corresponding path program 2 times [2020-10-14 04:50:29,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:29,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524195478] [2020-10-14 04:50:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:29,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:29,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 04:50:29,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-14 04:50:29,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:29,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:50:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:29,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:29,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:29,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:29,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:29,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:29,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:29,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524195478] [2020-10-14 04:50:29,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:29,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:29,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017545264] [2020-10-14 04:50:29,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:29,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:29,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:29,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:29,823 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand 10 states. [2020-10-14 04:50:30,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:30,192 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2020-10-14 04:50:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:50:30,192 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-14 04:50:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:30,193 INFO L225 Difference]: With dead ends: 131 [2020-10-14 04:50:30,193 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 04:50:30,194 INFO L675 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 [2020-10-14 04:50:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 04:50:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119. [2020-10-14 04:50:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 04:50:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2020-10-14 04:50:30,201 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 57 [2020-10-14 04:50:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:30,201 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2020-10-14 04:50:30,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2020-10-14 04:50:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 04:50:30,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:30,203 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, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:30,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:50:30,203 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:30,203 INFO L82 PathProgramCache]: Analyzing trace with hash -456576236, now seen corresponding path program 1 times [2020-10-14 04:50:30,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:30,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340854846] [2020-10-14 04:50:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:30,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:30,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 04:50:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 04:50:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:30,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 04:50:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:30,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:30,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:30,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:30,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:30,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:30,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:30,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340854846] [2020-10-14 04:50:30,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:30,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:30,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305112757] [2020-10-14 04:50:30,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:30,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:30,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:30,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:30,791 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand 11 states. [2020-10-14 04:50:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:31,222 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2020-10-14 04:50:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:31,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-14 04:50:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:31,224 INFO L225 Difference]: With dead ends: 141 [2020-10-14 04:50:31,224 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 04:50:31,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 04:50:31,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 121. [2020-10-14 04:50:31,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 04:50:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2020-10-14 04:50:31,234 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 59 [2020-10-14 04:50:31,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:31,235 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2020-10-14 04:50:31,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:31,235 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2020-10-14 04:50:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 04:50:31,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:31,236 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] [2020-10-14 04:50:31,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 04:50:31,236 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:31,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1788624169, now seen corresponding path program 2 times [2020-10-14 04:50:31,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:31,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287957403] [2020-10-14 04:50:31,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:31,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:31,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 04:50:31,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 04:50:31,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:31,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 04:50:31,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:31,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:31,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:31,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:31,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:31,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287957403] [2020-10-14 04:50:31,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:31,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:31,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515214701] [2020-10-14 04:50:31,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:31,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:31,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:31,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:31,785 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand 11 states. [2020-10-14 04:50:32,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:32,234 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2020-10-14 04:50:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:32,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-14 04:50:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:32,236 INFO L225 Difference]: With dead ends: 141 [2020-10-14 04:50:32,236 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 04:50:32,237 INFO L675 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 [2020-10-14 04:50:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 04:50:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-14 04:50:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 04:50:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-14 04:50:32,244 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 60 [2020-10-14 04:50:32,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:32,245 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-14 04:50:32,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-14 04:50:32,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 04:50:32,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:32,246 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] [2020-10-14 04:50:32,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 04:50:32,246 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:32,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1199088795, now seen corresponding path program 2 times [2020-10-14 04:50:32,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:32,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909015147] [2020-10-14 04:50:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:32,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:32,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 04:50:32,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 04:50:32,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:32,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:50:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:32,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:32,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:32,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:32,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:32,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:33,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909015147] [2020-10-14 04:50:33,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:33,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:33,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569328564] [2020-10-14 04:50:33,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:33,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:33,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:33,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:33,030 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 11 states. [2020-10-14 04:50:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:33,500 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2020-10-14 04:50:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:33,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-14 04:50:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:33,502 INFO L225 Difference]: With dead ends: 140 [2020-10-14 04:50:33,502 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 04:50:33,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 04:50:33,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 126. [2020-10-14 04:50:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 04:50:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2020-10-14 04:50:33,514 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 60 [2020-10-14 04:50:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:33,514 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2020-10-14 04:50:33,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2020-10-14 04:50:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 04:50:33,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:33,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:33,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 04:50:33,516 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:33,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:33,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1252312032, now seen corresponding path program 1 times [2020-10-14 04:50:33,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:33,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534130365] [2020-10-14 04:50:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:33,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:33,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:50:33,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:33,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 04:50:33,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:33,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 04:50:33,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:34,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:34,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:34,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534130365] [2020-10-14 04:50:34,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:34,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:34,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603612282] [2020-10-14 04:50:34,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:34,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:34,329 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand 12 states. [2020-10-14 04:50:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:34,782 INFO L93 Difference]: Finished difference Result 148 states and 151 transitions. [2020-10-14 04:50:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:34,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-14 04:50:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:34,783 INFO L225 Difference]: With dead ends: 148 [2020-10-14 04:50:34,783 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 04:50:34,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 04:50:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 134. [2020-10-14 04:50:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 04:50:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-14 04:50:34,794 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 67 [2020-10-14 04:50:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:34,795 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-14 04:50:34,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-14 04:50:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 04:50:34,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:34,796 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, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:34,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 04:50:34,796 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:34,797 INFO L82 PathProgramCache]: Analyzing trace with hash 275820187, now seen corresponding path program 2 times [2020-10-14 04:50:34,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:34,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406067962] [2020-10-14 04:50:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:35,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:35,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:50:35,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:35,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-14 04:50:35,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:35,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:50:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:50:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:35,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:35,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:35,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:50:35,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:35,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:35,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:35,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406067962] [2020-10-14 04:50:35,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:35,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:35,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873468295] [2020-10-14 04:50:35,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:35,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:35,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:35,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:35,981 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 12 states. [2020-10-14 04:50:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:36,328 INFO L93 Difference]: Finished difference Result 144 states and 147 transitions. [2020-10-14 04:50:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:36,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-14 04:50:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:36,330 INFO L225 Difference]: With dead ends: 144 [2020-10-14 04:50:36,330 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 04:50:36,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 04:50:36,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-10-14 04:50:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 04:50:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-14 04:50:36,340 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 68 [2020-10-14 04:50:36,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:36,340 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-14 04:50:36,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-14 04:50:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 04:50:36,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:36,341 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] [2020-10-14 04:50:36,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 04:50:36,342 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 30363838, now seen corresponding path program 3 times [2020-10-14 04:50:36,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:36,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160003143] [2020-10-14 04:50:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:36,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:50:36,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:36,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-14 04:50:36,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:36,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 04:50:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:37,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:37,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:37,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:37,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:37,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:37,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:37,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160003143] [2020-10-14 04:50:37,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:37,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:37,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492747210] [2020-10-14 04:50:37,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:37,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:37,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:37,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:37,394 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 12 states. [2020-10-14 04:50:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:37,946 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2020-10-14 04:50:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:37,947 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-14 04:50:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:37,948 INFO L225 Difference]: With dead ends: 134 [2020-10-14 04:50:37,948 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 04:50:37,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 04:50:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 105. [2020-10-14 04:50:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 04:50:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-14 04:50:37,956 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 69 [2020-10-14 04:50:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:37,957 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-14 04:50:37,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-14 04:50:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 04:50:37,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:37,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:37,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 04:50:37,958 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:37,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:37,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1249429676, now seen corresponding path program 2 times [2020-10-14 04:50:37,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:37,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808313775] [2020-10-14 04:50:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:39,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 04:50:39,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-10-14 04:50:39,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:39,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 04:50:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:50:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:39,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:39,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:39,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 04:50:39,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808313775] [2020-10-14 04:50:39,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:39,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:39,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272833558] [2020-10-14 04:50:39,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:39,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:39,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:39,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:39,140 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 9 states. [2020-10-14 04:50:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:39,442 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2020-10-14 04:50:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:39,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-14 04:50:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:39,443 INFO L225 Difference]: With dead ends: 133 [2020-10-14 04:50:39,444 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 04:50:39,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 04:50:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-10-14 04:50:39,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 04:50:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions. [2020-10-14 04:50:39,458 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 75 [2020-10-14 04:50:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:39,458 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 130 transitions. [2020-10-14 04:50:39,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 130 transitions. [2020-10-14 04:50:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 04:50:39,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:39,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:39,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 04:50:39,460 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash -256391065, now seen corresponding path program 3 times [2020-10-14 04:50:39,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:39,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005303301] [2020-10-14 04:50:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:40,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:50:40,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-14 04:50:40,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:40,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:50:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:40,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:40,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:40,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:40,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:40,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:40,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:40,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:40,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:40,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:40,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:40,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005303301] [2020-10-14 04:50:40,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:40,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:40,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342956626] [2020-10-14 04:50:40,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:40,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:40,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:40,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:40,619 INFO L87 Difference]: Start difference. First operand 127 states and 130 transitions. Second operand 13 states. [2020-10-14 04:50:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:41,067 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2020-10-14 04:50:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:41,067 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-10-14 04:50:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:41,069 INFO L225 Difference]: With dead ends: 129 [2020-10-14 04:50:41,069 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 04:50:41,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 04:50:41,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 84. [2020-10-14 04:50:41,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 04:50:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-10-14 04:50:41,081 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 76 [2020-10-14 04:50:41,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:41,081 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-10-14 04:50:41,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-10-14 04:50:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 04:50:41,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:41,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:41,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 04:50:41,084 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:41,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1855013240, now seen corresponding path program 4 times [2020-10-14 04:50:41,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:41,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284414255] [2020-10-14 04:50:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:41,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:41,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:41,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:50:41,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-14 04:50:41,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:41,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:50:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:41,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:41,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:41,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:41,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:41,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:41,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:41,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284414255] [2020-10-14 04:50:41,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:41,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:41,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836724502] [2020-10-14 04:50:41,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:41,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:41,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:41,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:41,872 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 13 states. [2020-10-14 04:50:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:42,522 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2020-10-14 04:50:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:42,523 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-14 04:50:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:42,524 INFO L225 Difference]: With dead ends: 149 [2020-10-14 04:50:42,525 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 04:50:42,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:50:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 04:50:42,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-14 04:50:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 04:50:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-10-14 04:50:42,534 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 83 [2020-10-14 04:50:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:42,535 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-10-14 04:50:42,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-10-14 04:50:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 04:50:42,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:42,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:42,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 04:50:42,537 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:42,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1078962177, now seen corresponding path program 5 times [2020-10-14 04:50:42,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:42,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483977013] [2020-10-14 04:50:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:43,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:50:43,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-14 04:50:43,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:43,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:50:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 04:50:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:43,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:43,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483977013] [2020-10-14 04:50:43,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:43,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:43,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012277201] [2020-10-14 04:50:43,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:43,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:43,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:43,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:43,853 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 14 states. [2020-10-14 04:50:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:44,644 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2020-10-14 04:50:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:50:44,644 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-14 04:50:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:44,646 INFO L225 Difference]: With dead ends: 166 [2020-10-14 04:50:44,646 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 04:50:44,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:50:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 04:50:44,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-10-14 04:50:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 04:50:44,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-14 04:50:44,659 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 92 [2020-10-14 04:50:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:44,660 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-14 04:50:44,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:50:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-14 04:50:44,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 04:50:44,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:44,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:44,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 04:50:44,662 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:44,662 INFO L82 PathProgramCache]: Analyzing trace with hash 150588875, now seen corresponding path program 6 times [2020-10-14 04:50:44,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:44,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160771879] [2020-10-14 04:50:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:45,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:45,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:50:45,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-14 04:50:45,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:45,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:50:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 04:50:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:45,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:45,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:45,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:45,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 16 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:45,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160771879] [2020-10-14 04:50:45,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:45,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:50:45,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749374211] [2020-10-14 04:50:45,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:50:45,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:45,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:50:45,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:45,928 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 15 states. [2020-10-14 04:50:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:46,853 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2020-10-14 04:50:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:50:46,853 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-14 04:50:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:46,854 INFO L225 Difference]: With dead ends: 166 [2020-10-14 04:50:46,855 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 04:50:46,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:50:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 04:50:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-14 04:50:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 04:50:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2020-10-14 04:50:46,864 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 100 [2020-10-14 04:50:46,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:46,865 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2020-10-14 04:50:46,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:50:46,865 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2020-10-14 04:50:46,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 04:50:46,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:46,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:46,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 04:50:46,867 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:46,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:46,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1675929944, now seen corresponding path program 7 times [2020-10-14 04:50:46,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:46,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341630059] [2020-10-14 04:50:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:48,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:48,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:50:48,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-14 04:50:48,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:48,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:50:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:50:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:48,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:48,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:48,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:48,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:48,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:48,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341630059] [2020-10-14 04:50:48,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:48,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:50:48,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982417233] [2020-10-14 04:50:48,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:50:48,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:48,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:50:48,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:48,786 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 16 states. [2020-10-14 04:50:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:49,739 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2020-10-14 04:50:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:50:49,740 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 101 [2020-10-14 04:50:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:49,741 INFO L225 Difference]: With dead ends: 175 [2020-10-14 04:50:49,742 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 04:50:49,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:50:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 04:50:49,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 139. [2020-10-14 04:50:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 04:50:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2020-10-14 04:50:49,753 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 101 [2020-10-14 04:50:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:49,754 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2020-10-14 04:50:49,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:50:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2020-10-14 04:50:49,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 04:50:49,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:49,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:49,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 04:50:49,755 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:49,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:49,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1813493284, now seen corresponding path program 8 times [2020-10-14 04:50:49,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:49,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378008090] [2020-10-14 04:50:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:51,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:51,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 04:50:51,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:51,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-14 04:50:51,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:51,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:50:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:50:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:51,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:51,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:51,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:51,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:51,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:51,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378008090] [2020-10-14 04:50:51,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:51,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:50:51,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605450161] [2020-10-14 04:50:51,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:50:51,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:51,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:50:51,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:51,754 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 16 states. [2020-10-14 04:50:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:52,927 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2020-10-14 04:50:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:50:52,927 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 109 [2020-10-14 04:50:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:52,929 INFO L225 Difference]: With dead ends: 183 [2020-10-14 04:50:52,929 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 04:50:52,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:50:52,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 04:50:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 147. [2020-10-14 04:50:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 04:50:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2020-10-14 04:50:52,941 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 109 [2020-10-14 04:50:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:52,942 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2020-10-14 04:50:52,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:50:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2020-10-14 04:50:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 04:50:52,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:52,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:52,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 04:50:52,943 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:52,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1686359071, now seen corresponding path program 9 times [2020-10-14 04:50:52,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:52,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556031457] [2020-10-14 04:50:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 04:50:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-14 04:50:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:54,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:50:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 04:50:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:54,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:54,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:54,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:54,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:54,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:54,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556031457] [2020-10-14 04:50:54,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:54,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:50:54,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818443658] [2020-10-14 04:50:54,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:50:54,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:54,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:50:54,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:50:54,903 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 17 states. [2020-10-14 04:50:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:56,300 INFO L93 Difference]: Finished difference Result 242 states and 245 transitions. [2020-10-14 04:50:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:50:56,300 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-14 04:50:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:56,302 INFO L225 Difference]: With dead ends: 242 [2020-10-14 04:50:56,302 INFO L226 Difference]: Without dead ends: 240 [2020-10-14 04:50:56,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:50:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-14 04:50:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 176. [2020-10-14 04:50:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 04:50:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 179 transitions. [2020-10-14 04:50:56,317 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 179 transitions. Word has length 110 [2020-10-14 04:50:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:56,317 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 179 transitions. [2020-10-14 04:50:56,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:50:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 179 transitions. [2020-10-14 04:50:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 04:50:56,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:56,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:56,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 04:50:56,319 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash -318294288, now seen corresponding path program 10 times [2020-10-14 04:50:56,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:56,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760193211] [2020-10-14 04:50:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:57,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:57,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:50:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-14 04:50:57,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:57,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:50:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:50:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:57,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:57,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:57,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:57,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:57,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:57,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:57,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 20 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:57,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760193211] [2020-10-14 04:50:57,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:57,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:50:57,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560423725] [2020-10-14 04:50:57,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:50:57,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:57,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:50:57,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:50:57,996 INFO L87 Difference]: Start difference. First operand 176 states and 179 transitions. Second operand 17 states. [2020-10-14 04:50:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:59,182 INFO L93 Difference]: Finished difference Result 220 states and 223 transitions. [2020-10-14 04:50:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:50:59,183 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-10-14 04:50:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:59,183 INFO L225 Difference]: With dead ends: 220 [2020-10-14 04:50:59,184 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 04:50:59,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:50:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 04:50:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-10-14 04:50:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 04:50:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2020-10-14 04:50:59,203 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 117 [2020-10-14 04:50:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:59,204 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2020-10-14 04:50:59,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:50:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2020-10-14 04:50:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 04:50:59,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:59,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:59,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 04:50:59,205 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:59,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1247338005, now seen corresponding path program 11 times [2020-10-14 04:50:59,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:59,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111201541] [2020-10-14 04:50:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:00,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:00,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 04:51:00,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-10-14 04:51:00,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:00,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:51:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:51:00,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:01,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:01,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:01,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:01,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:01,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:01,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111201541] [2020-10-14 04:51:01,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:01,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:51:01,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351781463] [2020-10-14 04:51:01,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:51:01,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:01,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:51:01,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:51:01,285 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 18 states. [2020-10-14 04:51:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:02,635 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-10-14 04:51:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:51:02,636 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-14 04:51:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:02,638 INFO L225 Difference]: With dead ends: 192 [2020-10-14 04:51:02,638 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 04:51:02,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:51:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 04:51:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 156. [2020-10-14 04:51:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 04:51:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2020-10-14 04:51:02,651 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 118 [2020-10-14 04:51:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:02,652 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2020-10-14 04:51:02,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:51:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2020-10-14 04:51:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 04:51:02,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:02,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:02,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 04:51:02,654 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1289869624, now seen corresponding path program 12 times [2020-10-14 04:51:02,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:02,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287182450] [2020-10-14 04:51:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:02,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:03,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:03,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:51:03,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1201 [2020-10-14 04:51:03,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:03,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:51:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:51:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:04,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:51:04,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:04,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:04,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287182450] [2020-10-14 04:51:04,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:04,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:51:04,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861565156] [2020-10-14 04:51:04,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:51:04,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:04,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:51:04,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:51:04,898 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 18 states. [2020-10-14 04:51:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:05,863 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2020-10-14 04:51:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:51:05,864 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 119 [2020-10-14 04:51:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:05,865 INFO L225 Difference]: With dead ends: 190 [2020-10-14 04:51:05,865 INFO L226 Difference]: Without dead ends: 188 [2020-10-14 04:51:05,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:51:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-14 04:51:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 156. [2020-10-14 04:51:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 04:51:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2020-10-14 04:51:05,878 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 119 [2020-10-14 04:51:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:05,879 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2020-10-14 04:51:05,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:51:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2020-10-14 04:51:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 04:51:05,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:05,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:05,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 04:51:05,881 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:05,881 INFO L82 PathProgramCache]: Analyzing trace with hash 321776567, now seen corresponding path program 13 times [2020-10-14 04:51:05,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:05,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278939704] [2020-10-14 04:51:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:05,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:07,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 04:51:07,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:07,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-14 04:51:07,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:07,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:51:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:07,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 04:51:07,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:07,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:07,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:51:07,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:07,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:07,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:08,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278939704] [2020-10-14 04:51:08,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:08,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:51:08,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353888259] [2020-10-14 04:51:08,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:51:08,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:51:08,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:51:08,046 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 18 states. [2020-10-14 04:51:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:09,445 INFO L93 Difference]: Finished difference Result 208 states and 210 transitions. [2020-10-14 04:51:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:09,446 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 126 [2020-10-14 04:51:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:09,447 INFO L225 Difference]: With dead ends: 208 [2020-10-14 04:51:09,447 INFO L226 Difference]: Without dead ends: 206 [2020-10-14 04:51:09,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:51:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-14 04:51:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 164. [2020-10-14 04:51:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 04:51:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2020-10-14 04:51:09,466 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 126 [2020-10-14 04:51:09,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:09,466 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2020-10-14 04:51:09,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:51:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2020-10-14 04:51:09,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 04:51:09,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:09,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:09,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 04:51:09,468 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1414989316, now seen corresponding path program 14 times [2020-10-14 04:51:09,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:09,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972293944] [2020-10-14 04:51:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:51:10,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-14 04:51:10,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:10,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 04:51:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 04:51:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:11,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:11,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:11,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:11,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:11,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:11,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:11,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:11,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:11,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:12,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972293944] [2020-10-14 04:51:12,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:12,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:51:12,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410306576] [2020-10-14 04:51:12,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:51:12,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:12,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:51:12,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:12,027 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 19 states. [2020-10-14 04:51:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:13,276 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2020-10-14 04:51:13,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:51:13,277 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 127 [2020-10-14 04:51:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:13,279 INFO L225 Difference]: With dead ends: 206 [2020-10-14 04:51:13,279 INFO L226 Difference]: Without dead ends: 204 [2020-10-14 04:51:13,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:51:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-14 04:51:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 164. [2020-10-14 04:51:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 04:51:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2020-10-14 04:51:13,297 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 127 [2020-10-14 04:51:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:13,298 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2020-10-14 04:51:13,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:51:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2020-10-14 04:51:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 04:51:13,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:13,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:13,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 04:51:13,299 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:13,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1818503555, now seen corresponding path program 15 times [2020-10-14 04:51:13,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:13,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336262423] [2020-10-14 04:51:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:13,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:14,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:14,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 04:51:14,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1261 [2020-10-14 04:51:14,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:14,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 04:51:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 04:51:14,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:15,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:15,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:15,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:15,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:15,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:15,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 24 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:15,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336262423] [2020-10-14 04:51:15,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:15,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:51:15,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213899050] [2020-10-14 04:51:15,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:51:15,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:51:15,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:15,442 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 19 states. [2020-10-14 04:51:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:17,132 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2020-10-14 04:51:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:17,133 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 134 [2020-10-14 04:51:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:17,134 INFO L225 Difference]: With dead ends: 216 [2020-10-14 04:51:17,135 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 04:51:17,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:51:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 04:51:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-14 04:51:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 04:51:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2020-10-14 04:51:17,150 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2020-10-14 04:51:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:17,150 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2020-10-14 04:51:17,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:51:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2020-10-14 04:51:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 04:51:17,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:17,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:17,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 04:51:17,152 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash 6858448, now seen corresponding path program 16 times [2020-10-14 04:51:17,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:17,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678353786] [2020-10-14 04:51:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:18,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:18,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 04:51:18,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-10-14 04:51:18,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:18,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 04:51:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 04:51:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:19,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:19,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:19,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:19,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:19,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:19,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:19,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678353786] [2020-10-14 04:51:19,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:19,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:51:19,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521668451] [2020-10-14 04:51:19,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:51:19,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:19,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:51:19,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:51:19,905 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 20 states. [2020-10-14 04:51:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:21,586 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2020-10-14 04:51:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:51:21,586 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 135 [2020-10-14 04:51:21,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:21,588 INFO L225 Difference]: With dead ends: 225 [2020-10-14 04:51:21,588 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 04:51:21,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:51:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 04:51:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 173. [2020-10-14 04:51:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 04:51:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2020-10-14 04:51:21,606 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 135 [2020-10-14 04:51:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:21,606 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2020-10-14 04:51:21,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:51:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2020-10-14 04:51:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 04:51:21,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:21,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:21,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 04:51:21,608 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:21,609 INFO L82 PathProgramCache]: Analyzing trace with hash -144524388, now seen corresponding path program 17 times [2020-10-14 04:51:21,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:21,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428156980] [2020-10-14 04:51:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:23,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:23,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 04:51:23,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2120 [2020-10-14 04:51:23,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:23,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 04:51:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 04:51:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:24,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:24,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:24,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:24,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:24,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:24,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428156980] [2020-10-14 04:51:24,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:24,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:51:24,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266219320] [2020-10-14 04:51:24,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:51:24,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:24,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:51:24,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:51:24,888 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 20 states. [2020-10-14 04:51:27,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:27,067 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2020-10-14 04:51:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 04:51:27,068 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 143 [2020-10-14 04:51:27,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:27,070 INFO L225 Difference]: With dead ends: 233 [2020-10-14 04:51:27,070 INFO L226 Difference]: Without dead ends: 231 [2020-10-14 04:51:27,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:51:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-14 04:51:27,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 181. [2020-10-14 04:51:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 04:51:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2020-10-14 04:51:27,085 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 143 [2020-10-14 04:51:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:27,086 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2020-10-14 04:51:27,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:51:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2020-10-14 04:51:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 04:51:27,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:27,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:27,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 04:51:27,087 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:27,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:27,087 INFO L82 PathProgramCache]: Analyzing trace with hash -717465641, now seen corresponding path program 18 times [2020-10-14 04:51:27,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:27,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269109782] [2020-10-14 04:51:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:29,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:29,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 04:51:29,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:29,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2111 [2020-10-14 04:51:29,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:29,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:29,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 04:51:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 04:51:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:30,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:30,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:30,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:30,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:30,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269109782] [2020-10-14 04:51:30,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:30,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:51:30,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014476255] [2020-10-14 04:51:30,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:51:30,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:30,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:51:30,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:51:30,535 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 21 states. [2020-10-14 04:51:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:32,527 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2020-10-14 04:51:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:51:32,527 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 144 [2020-10-14 04:51:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:32,529 INFO L225 Difference]: With dead ends: 231 [2020-10-14 04:51:32,529 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 04:51:32,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:51:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 04:51:32,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 181. [2020-10-14 04:51:32,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 04:51:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2020-10-14 04:51:32,548 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 144 [2020-10-14 04:51:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:32,548 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2020-10-14 04:51:32,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:51:32,548 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2020-10-14 04:51:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 04:51:32,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:32,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:32,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 04:51:32,549 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:32,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:32,550 INFO L82 PathProgramCache]: Analyzing trace with hash -745454488, now seen corresponding path program 19 times [2020-10-14 04:51:32,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:32,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267776467] [2020-10-14 04:51:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:34,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 04:51:34,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:34,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2119 [2020-10-14 04:51:34,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:34,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 04:51:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 04:51:34,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:35,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:35,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:35,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:35,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:35,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:35,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:35,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:35,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 28 proven. 368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:35,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267776467] [2020-10-14 04:51:35,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:35,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:51:35,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730164895] [2020-10-14 04:51:35,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:51:35,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:35,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:51:35,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:51:35,900 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 21 states. [2020-10-14 04:51:38,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:38,153 INFO L93 Difference]: Finished difference Result 241 states and 243 transitions. [2020-10-14 04:51:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:51:38,153 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 151 [2020-10-14 04:51:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:38,154 INFO L225 Difference]: With dead ends: 241 [2020-10-14 04:51:38,155 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 04:51:38,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 04:51:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 04:51:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-10-14 04:51:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 04:51:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2020-10-14 04:51:38,173 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 151 [2020-10-14 04:51:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:38,173 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2020-10-14 04:51:38,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:51:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2020-10-14 04:51:38,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 04:51:38,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:38,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:38,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 04:51:38,175 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:38,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:38,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1479248477, now seen corresponding path program 20 times [2020-10-14 04:51:38,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:38,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081290390] [2020-10-14 04:51:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:40,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 04:51:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2053 [2020-10-14 04:51:40,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:40,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 04:51:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 04:51:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:40,935 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-14 04:51:41,110 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-14 04:51:41,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:41,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:41,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:41,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:41,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:41,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081290390] [2020-10-14 04:51:41,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:41,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 04:51:41,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029026366] [2020-10-14 04:51:41,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 04:51:41,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:41,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 04:51:41,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:51:41,832 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 22 states. [2020-10-14 04:51:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:44,205 INFO L93 Difference]: Finished difference Result 250 states and 252 transitions. [2020-10-14 04:51:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 04:51:44,205 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 152 [2020-10-14 04:51:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:44,206 INFO L225 Difference]: With dead ends: 250 [2020-10-14 04:51:44,206 INFO L226 Difference]: Without dead ends: 248 [2020-10-14 04:51:44,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:51:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-14 04:51:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 190. [2020-10-14 04:51:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-14 04:51:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2020-10-14 04:51:44,227 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 152 [2020-10-14 04:51:44,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:44,228 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2020-10-14 04:51:44,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 04:51:44,228 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2020-10-14 04:51:44,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 04:51:44,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:44,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:44,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 04:51:44,229 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:44,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:44,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1233651567, now seen corresponding path program 21 times [2020-10-14 04:51:44,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:44,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972638987] [2020-10-14 04:51:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:46,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:46,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 04:51:46,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-10-14 04:51:46,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:46,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 04:51:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 04:51:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:48,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:48,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:48,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:48,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:48,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:48,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972638987] [2020-10-14 04:51:48,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:48,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 04:51:48,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871713418] [2020-10-14 04:51:48,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 04:51:48,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 04:51:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:51:48,533 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 22 states. [2020-10-14 04:51:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:51,038 INFO L93 Difference]: Finished difference Result 258 states and 260 transitions. [2020-10-14 04:51:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:51:51,038 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 160 [2020-10-14 04:51:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:51,040 INFO L225 Difference]: With dead ends: 258 [2020-10-14 04:51:51,040 INFO L226 Difference]: Without dead ends: 256 [2020-10-14 04:51:51,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:51:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-14 04:51:51,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 198. [2020-10-14 04:51:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-14 04:51:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2020-10-14 04:51:51,058 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 160 [2020-10-14 04:51:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:51,058 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2020-10-14 04:51:51,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 04:51:51,058 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2020-10-14 04:51:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 04:51:51,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:51,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:51,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 04:51:51,060 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:51,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:51,060 INFO L82 PathProgramCache]: Analyzing trace with hash -256502916, now seen corresponding path program 22 times [2020-10-14 04:51:51,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:51,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828106848] [2020-10-14 04:51:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:53,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:53,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 04:51:53,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2658 [2020-10-14 04:51:53,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:53,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 04:51:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 04:51:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:54,805 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-14 04:51:54,994 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-14 04:51:55,190 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-14 04:51:55,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:55,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:55,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:55,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:55,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:55,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:55,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:55,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:55,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:55,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:56,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828106848] [2020-10-14 04:51:56,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:56,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 04:51:56,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348722488] [2020-10-14 04:51:56,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 04:51:56,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:56,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 04:51:56,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:51:56,064 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 23 states. [2020-10-14 04:51:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:58,265 INFO L93 Difference]: Finished difference Result 256 states and 258 transitions. [2020-10-14 04:51:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:51:58,265 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 161 [2020-10-14 04:51:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:58,267 INFO L225 Difference]: With dead ends: 256 [2020-10-14 04:51:58,267 INFO L226 Difference]: Without dead ends: 254 [2020-10-14 04:51:58,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-10-14 04:51:58,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-14 04:51:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 198. [2020-10-14 04:51:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-14 04:51:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2020-10-14 04:51:58,292 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 161 [2020-10-14 04:51:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:58,293 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2020-10-14 04:51:58,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 04:51:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2020-10-14 04:51:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 04:51:58,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:58,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:58,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 04:51:58,295 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:58,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:58,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1906511163, now seen corresponding path program 23 times [2020-10-14 04:51:58,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:58,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203837254] [2020-10-14 04:51:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:58,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:01,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:01,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 04:52:01,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2936 [2020-10-14 04:52:01,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:01,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 04:52:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 04:52:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:01,930 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-14 04:52:02,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:02,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:02,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:02,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:02,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:02,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 32 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:02,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203837254] [2020-10-14 04:52:02,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:02,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 04:52:02,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161106147] [2020-10-14 04:52:02,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 04:52:02,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:02,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 04:52:02,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:52:02,829 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 23 states. [2020-10-14 04:52:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:05,801 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2020-10-14 04:52:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:52:05,801 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 168 [2020-10-14 04:52:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:05,802 INFO L225 Difference]: With dead ends: 266 [2020-10-14 04:52:05,802 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 04:52:05,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=120, Invalid=1520, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 04:52:05,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 04:52:05,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-14 04:52:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 04:52:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-10-14 04:52:05,821 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 168 [2020-10-14 04:52:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:05,821 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-10-14 04:52:05,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 04:52:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-10-14 04:52:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 04:52:05,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:05,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:05,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 04:52:05,823 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash -947995576, now seen corresponding path program 24 times [2020-10-14 04:52:05,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:05,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592812083] [2020-10-14 04:52:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:08,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:08,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 04:52:08,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:08,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2922 [2020-10-14 04:52:08,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:08,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 04:52:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 04:52:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:52:09,873 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-14 04:52:10,073 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-10-14 04:52:10,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:10,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:10,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592812083] [2020-10-14 04:52:10,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:10,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 04:52:10,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492511501] [2020-10-14 04:52:10,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 04:52:10,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:10,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 04:52:10,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:52:10,957 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 24 states. [2020-10-14 04:52:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:13,511 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2020-10-14 04:52:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:52:13,511 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 169 [2020-10-14 04:52:13,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:13,514 INFO L225 Difference]: With dead ends: 275 [2020-10-14 04:52:13,514 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 04:52:13,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 04:52:13,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 04:52:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 207. [2020-10-14 04:52:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 04:52:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2020-10-14 04:52:13,540 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 169 [2020-10-14 04:52:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:13,541 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2020-10-14 04:52:13,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 04:52:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2020-10-14 04:52:13,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 04:52:13,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:13,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:13,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 04:52:13,542 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:13,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1705498900, now seen corresponding path program 25 times [2020-10-14 04:52:13,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:13,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700389175] [2020-10-14 04:52:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:17,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 04:52:17,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3644 [2020-10-14 04:52:17,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:17,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 04:52:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 04:52:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:18,181 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-10-14 04:52:18,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:18,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:18,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:18,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:18,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:18,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:19,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700389175] [2020-10-14 04:52:19,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:19,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 04:52:19,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013778068] [2020-10-14 04:52:19,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 04:52:19,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:19,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 04:52:19,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:52:19,152 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 24 states. [2020-10-14 04:52:22,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:22,705 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2020-10-14 04:52:22,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 04:52:22,705 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 177 [2020-10-14 04:52:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:22,708 INFO L225 Difference]: With dead ends: 283 [2020-10-14 04:52:22,708 INFO L226 Difference]: Without dead ends: 281 [2020-10-14 04:52:22,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 04:52:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-14 04:52:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 215. [2020-10-14 04:52:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 04:52:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2020-10-14 04:52:22,736 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 177 [2020-10-14 04:52:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:22,737 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2020-10-14 04:52:22,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 04:52:22,737 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2020-10-14 04:52:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 04:52:22,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:22,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:22,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 04:52:22,739 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:22,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1410558863, now seen corresponding path program 26 times [2020-10-14 04:52:22,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:22,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717704296] [2020-10-14 04:52:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:26,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:26,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 04:52:26,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3738 [2020-10-14 04:52:26,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:26,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 04:52:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 04:52:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:27,559 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-14 04:52:27,783 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-14 04:52:28,070 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-10-14 04:52:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:28,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 0 proven. 609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:29,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717704296] [2020-10-14 04:52:29,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:29,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 04:52:29,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663537056] [2020-10-14 04:52:29,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 04:52:29,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 04:52:29,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:52:29,158 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 25 states. [2020-10-14 04:52:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:32,537 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2020-10-14 04:52:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 04:52:32,537 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 178 [2020-10-14 04:52:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:32,539 INFO L225 Difference]: With dead ends: 281 [2020-10-14 04:52:32,540 INFO L226 Difference]: Without dead ends: 279 [2020-10-14 04:52:32,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=120, Invalid=1440, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 04:52:32,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-14 04:52:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 215. [2020-10-14 04:52:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 04:52:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2020-10-14 04:52:32,568 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 178 [2020-10-14 04:52:32,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:32,569 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2020-10-14 04:52:32,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 04:52:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2020-10-14 04:52:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 04:52:32,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:32,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:32,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 04:52:32,571 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:32,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1836935648, now seen corresponding path program 27 times [2020-10-14 04:52:32,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:32,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167038878] [2020-10-14 04:52:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:32,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:36,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:36,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 04:52:36,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3713 [2020-10-14 04:52:36,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:36,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 04:52:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 04:52:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:37,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:37,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:37,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:37,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:37,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:37,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 36 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:38,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167038878] [2020-10-14 04:52:38,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:38,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 04:52:38,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738511849] [2020-10-14 04:52:38,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 04:52:38,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:38,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 04:52:38,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:52:38,339 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 25 states. [2020-10-14 04:52:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:42,060 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2020-10-14 04:52:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 04:52:42,061 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 185 [2020-10-14 04:52:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:42,062 INFO L225 Difference]: With dead ends: 291 [2020-10-14 04:52:42,062 INFO L226 Difference]: Without dead ends: 187 [2020-10-14 04:52:42,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 04:52:42,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-14 04:52:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-14 04:52:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 04:52:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2020-10-14 04:52:42,088 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 185 [2020-10-14 04:52:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:42,088 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2020-10-14 04:52:42,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 04:52:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2020-10-14 04:52:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 04:52:42,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:42,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:42,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 04:52:42,090 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:42,090 INFO L82 PathProgramCache]: Analyzing trace with hash 85479771, now seen corresponding path program 28 times [2020-10-14 04:52:42,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:42,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775133656] [2020-10-14 04:52:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:46,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:46,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 04:52:46,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4295 [2020-10-14 04:52:46,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:46,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 04:52:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 04:52:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:47,800 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2020-10-14 04:52:48,081 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-10-14 04:52:48,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:48,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:48,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:48,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:48,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:48,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 0 proven. 671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:49,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775133656] [2020-10-14 04:52:49,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:49,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 04:52:49,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663215043] [2020-10-14 04:52:49,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 04:52:49,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:49,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 04:52:49,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:52:49,295 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 26 states. [2020-10-14 04:52:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:53,400 INFO L93 Difference]: Finished difference Result 300 states and 302 transitions. [2020-10-14 04:52:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 04:52:53,401 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 186 [2020-10-14 04:52:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:53,403 INFO L225 Difference]: With dead ends: 300 [2020-10-14 04:52:53,403 INFO L226 Difference]: Without dead ends: 298 [2020-10-14 04:52:53,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=134, Invalid=1758, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 04:52:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-14 04:52:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 224. [2020-10-14 04:52:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-14 04:52:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2020-10-14 04:52:53,435 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 186 [2020-10-14 04:52:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:53,436 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 226 transitions. [2020-10-14 04:52:53,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 04:52:53,436 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 226 transitions. [2020-10-14 04:52:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 04:52:53,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:53,437 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:53,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 04:52:53,438 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:53,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:53,438 INFO L82 PathProgramCache]: Analyzing trace with hash -806311129, now seen corresponding path program 29 times [2020-10-14 04:52:53,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:53,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407293720] [2020-10-14 04:52:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:57,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 04:52:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4292 [2020-10-14 04:52:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:57,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 04:52:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 04:52:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:58,865 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 04:52:59,092 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-14 04:52:59,518 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-14 04:53:00,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:00,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:00,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:00,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:00,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:00,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:00,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:00,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:00,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:00,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:00,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:00,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407293720] [2020-10-14 04:53:00,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:00,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 04:53:00,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174058528] [2020-10-14 04:53:00,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 04:53:00,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:00,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 04:53:00,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:53:00,881 INFO L87 Difference]: Start difference. First operand 224 states and 226 transitions. Second operand 26 states. [2020-10-14 04:53:02,589 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-14 04:53:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:04,487 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2020-10-14 04:53:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 04:53:04,487 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 194 [2020-10-14 04:53:04,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:04,489 INFO L225 Difference]: With dead ends: 308 [2020-10-14 04:53:04,490 INFO L226 Difference]: Without dead ends: 306 [2020-10-14 04:53:04,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 04:53:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-14 04:53:04,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 232. [2020-10-14 04:53:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 04:53:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 234 transitions. [2020-10-14 04:53:04,517 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 234 transitions. Word has length 194 [2020-10-14 04:53:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:04,517 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 234 transitions. [2020-10-14 04:53:04,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 04:53:04,517 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 234 transitions. [2020-10-14 04:53:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 04:53:04,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:04,518 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:04,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 04:53:04,518 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:04,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:04,519 INFO L82 PathProgramCache]: Analyzing trace with hash -250791692, now seen corresponding path program 30 times [2020-10-14 04:53:04,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:04,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360418104] [2020-10-14 04:53:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:09,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:09,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 04:53:09,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 04:53:09,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:09,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 04:53:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-14 04:53:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:10,628 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-14 04:53:10,756 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 04:53:11,060 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-14 04:53:11,358 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2020-10-14 04:53:11,642 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-10-14 04:53:11,808 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-14 04:53:12,056 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-14 04:53:12,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:12,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:12,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:12,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:12,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:12,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:12,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:13,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360418104] [2020-10-14 04:53:13,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:13,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 04:53:13,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776480684] [2020-10-14 04:53:13,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 04:53:13,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:13,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 04:53:13,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:53:13,325 INFO L87 Difference]: Start difference. First operand 232 states and 234 transitions. Second operand 27 states. [2020-10-14 04:53:15,150 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 04:53:15,354 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 04:53:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:17,714 INFO L93 Difference]: Finished difference Result 407 states and 410 transitions. [2020-10-14 04:53:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 04:53:17,714 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 195 [2020-10-14 04:53:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:17,717 INFO L225 Difference]: With dead ends: 407 [2020-10-14 04:53:17,718 INFO L226 Difference]: Without dead ends: 405 [2020-10-14 04:53:17,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=129, Invalid=1511, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 04:53:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-14 04:53:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 261. [2020-10-14 04:53:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-14 04:53:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 264 transitions. [2020-10-14 04:53:17,746 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 264 transitions. Word has length 195 [2020-10-14 04:53:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:17,747 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 264 transitions. [2020-10-14 04:53:17,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 04:53:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 264 transitions. [2020-10-14 04:53:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 04:53:17,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:17,748 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:17,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 04:53:17,748 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:17,748 INFO L82 PathProgramCache]: Analyzing trace with hash 870873331, now seen corresponding path program 31 times [2020-10-14 04:53:17,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:17,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551503057] [2020-10-14 04:53:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:18,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:22,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:22,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 04:53:22,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4910 [2020-10-14 04:53:22,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:22,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 04:53:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-14 04:53:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:23,509 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 04:53:23,703 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-14 04:53:23,917 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-14 04:53:24,195 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-14 04:53:25,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:25,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:25,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:25,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:25,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:25,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:25,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 40 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:25,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551503057] [2020-10-14 04:53:25,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:25,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 04:53:25,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117697672] [2020-10-14 04:53:25,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 04:53:25,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:25,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 04:53:25,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:53:25,693 INFO L87 Difference]: Start difference. First operand 261 states and 264 transitions. Second operand 27 states. [2020-10-14 04:53:28,096 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 04:53:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:30,329 INFO L93 Difference]: Finished difference Result 345 states and 348 transitions. [2020-10-14 04:53:30,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 04:53:30,330 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 202 [2020-10-14 04:53:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:30,331 INFO L225 Difference]: With dead ends: 345 [2020-10-14 04:53:30,331 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 04:53:30,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=144, Invalid=2208, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 04:53:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 04:53:30,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2020-10-14 04:53:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-14 04:53:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2020-10-14 04:53:30,355 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 202 [2020-10-14 04:53:30,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:30,355 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2020-10-14 04:53:30,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 04:53:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2020-10-14 04:53:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 04:53:30,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:30,357 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:30,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 04:53:30,357 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:30,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:30,357 INFO L82 PathProgramCache]: Analyzing trace with hash -453711424, now seen corresponding path program 32 times [2020-10-14 04:53:30,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:30,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759567150] [2020-10-14 04:53:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:30,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:35,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 04:53:35,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 04:53:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:35,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 04:53:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 04:53:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:36,627 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 04:53:36,844 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-14 04:53:37,122 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2020-10-14 04:53:37,466 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 106 [2020-10-14 04:53:37,978 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 116 [2020-10-14 04:53:38,454 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 123 [2020-10-14 04:53:39,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:39,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:39,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:39,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:39,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:39,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:39,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:40,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759567150] [2020-10-14 04:53:40,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:40,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 04:53:40,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432527640] [2020-10-14 04:53:40,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 04:53:40,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:40,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 04:53:40,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:53:40,024 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 28 states. [2020-10-14 04:53:42,546 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 04:53:43,323 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-14 04:53:45,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:45,308 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2020-10-14 04:53:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 04:53:45,309 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 203 [2020-10-14 04:53:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:45,310 INFO L225 Difference]: With dead ends: 317 [2020-10-14 04:53:45,310 INFO L226 Difference]: Without dead ends: 315 [2020-10-14 04:53:45,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=146, Invalid=2110, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 04:53:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-14 04:53:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 241. [2020-10-14 04:53:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-14 04:53:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2020-10-14 04:53:45,354 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 203 [2020-10-14 04:53:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:45,354 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2020-10-14 04:53:45,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 04:53:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2020-10-14 04:53:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 04:53:45,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:45,357 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:45,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 04:53:45,357 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:45,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:45,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2089864571, now seen corresponding path program 33 times [2020-10-14 04:53:45,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:45,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786005885] [2020-10-14 04:53:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 04:53:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 04:53:50,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:50,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 04:53:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 04:53:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:52,062 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-14 04:53:52,349 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-10-14 04:53:52,667 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2020-10-14 04:53:53,016 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2020-10-14 04:53:53,256 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2020-10-14 04:53:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:54,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:54,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:54,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:54,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:54,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 858 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:54,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786005885] [2020-10-14 04:53:54,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:54,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 04:53:54,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291492445] [2020-10-14 04:53:54,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 04:53:54,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:54,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 04:53:54,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:53:54,717 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 28 states. [2020-10-14 04:53:57,420 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-14 04:53:57,666 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-14 04:53:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:59,892 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2020-10-14 04:53:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 04:53:59,893 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 204 [2020-10-14 04:53:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:59,895 INFO L225 Difference]: With dead ends: 315 [2020-10-14 04:53:59,896 INFO L226 Difference]: Without dead ends: 313 [2020-10-14 04:53:59,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=143, Invalid=1927, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 04:53:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-14 04:53:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 241. [2020-10-14 04:53:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-14 04:53:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2020-10-14 04:53:59,927 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 204 [2020-10-14 04:53:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:59,927 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2020-10-14 04:53:59,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 04:53:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2020-10-14 04:53:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 04:53:59,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:59,929 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:59,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 04:53:59,929 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:59,929 INFO L82 PathProgramCache]: Analyzing trace with hash 884280972, now seen corresponding path program 34 times [2020-10-14 04:53:59,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:59,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393504206] [2020-10-14 04:53:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:05,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:05,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 04:54:05,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 04:54:05,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:05,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 04:54:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 04:54:05,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:06,296 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-14 04:54:06,582 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-10-14 04:54:06,877 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-14 04:54:07,236 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-10-14 04:54:07,446 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-14 04:54:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:08,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:08,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:08,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:08,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:08,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:08,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 908 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:09,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393504206] [2020-10-14 04:54:09,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:09,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 04:54:09,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253058455] [2020-10-14 04:54:09,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 04:54:09,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:09,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 04:54:09,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:54:09,057 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 28 states.