/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=BIGGEST --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/dll-queue-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:34:11,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:34:11,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:34:11,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:34:11,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:34:11,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:34:11,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:34:11,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:34:11,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:34:11,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:34:11,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:34:11,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:34:11,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:34:11,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:34:11,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:34:11,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:34:11,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:34:11,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:34:11,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:34:11,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:34:11,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:34:11,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:34:11,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:34:11,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:34:11,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:34:11,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:34:11,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:34:11,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:34:11,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:34:11,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:34:11,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:34:11,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:34:11,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:34:11,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:34:11,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:34:11,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:34:11,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:34:11,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:34:11,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:34:11,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:34:11,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:34:11,688 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 [2020-10-12 15:34:11,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:34:11,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:34:11,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:34:11,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:34:11,710 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:34:11,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:34:11,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:34:11,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:34:11,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:34:11,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:34:11,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:34:11,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:34:11,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:34:11,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:34:11,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:34:11,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:34:11,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:34:11,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:34:11,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:34:11,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:34:11,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:34:11,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:11,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:34:11,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:34:11,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:34:11,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:34:11,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:34:11,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:34:11,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:34:11,716 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:34:12,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:34:12,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:34:12,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:34:12,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:34:12,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:34:12,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-queue-1.i [2020-10-12 15:34:12,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09f44d27a/bfaab61c51d84b309785f575ab0c6ebe/FLAG27397680f [2020-10-12 15:34:12,597 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:34:12,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-queue-1.i [2020-10-12 15:34:12,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09f44d27a/bfaab61c51d84b309785f575ab0c6ebe/FLAG27397680f [2020-10-12 15:34:12,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09f44d27a/bfaab61c51d84b309785f575ab0c6ebe [2020-10-12 15:34:12,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:34:12,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:34:12,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:12,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:34:12,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:34:12,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69889533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12, skipping insertion in model container [2020-10-12 15:34:12,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:34:13,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:34:13,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:13,544 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:34:13,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:13,644 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:34:13,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13 WrapperNode [2020-10-12 15:34:13,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:13,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:34:13,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:34:13,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:34:13,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:34:13,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:34:13,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:34:13,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:34:13,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (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 [2020-10-12 15:34:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:34:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:34:13,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:34:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:34:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:34:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:34:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:34:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:34:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:34:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:34:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:34:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:34:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:34:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:34:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:34:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:34:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:34:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:34:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:34:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:34:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:34:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:34:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:34:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:34:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:34:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:34:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:34:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:34:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:34:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:34:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:34:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:34:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:34:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:34:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:34:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:34:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:34:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:34:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:34:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:34:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:34:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:34:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:34:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:34:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:34:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:34:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:34:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:34:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:34:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:34:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:34:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:34:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:34:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:34:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:34:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:34:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:34:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:34:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:34:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:34:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:34:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:34:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:34:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:34:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:34:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:34:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:34:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:34:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:34:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:34:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:34:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:34:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:34:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:34:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:34:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:34:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:34:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:34:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:34:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:34:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:34:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:34:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:34:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:34:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:34:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:34:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:34:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:34:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:34:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:34:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:34:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:34:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:34:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:34:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:34:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:34:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:34:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:34:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:34:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:34:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:34:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:34:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:34:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:34:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:34:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:34:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:34:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:34:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:34:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:34:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:34:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:34:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:34:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:34:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:34:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:34:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:34:14,526 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:34:14,527 INFO L295 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-12 15:34:14,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:14 BoogieIcfgContainer [2020-10-12 15:34:14,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:34:14,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:34:14,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:34:14,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:34:14,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:34:12" (1/3) ... [2020-10-12 15:34:14,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6912ccfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:14, skipping insertion in model container [2020-10-12 15:34:14,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (2/3) ... [2020-10-12 15:34:14,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6912ccfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:14, skipping insertion in model container [2020-10-12 15:34:14,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:14" (3/3) ... [2020-10-12 15:34:14,539 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-queue-1.i [2020-10-12 15:34:14,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:34:14,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2020-10-12 15:34:14,571 INFO L251 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2020-10-12 15:34:14,593 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:34:14,594 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:34:14,594 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:34:14,594 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:34:14,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:34:14,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:34:14,595 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:34:14,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:34:14,613 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-12 15:34:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-12 15:34:14,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:14,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:14,620 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]=== [2020-10-12 15:34:14,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:14,624 INFO L82 PathProgramCache]: Analyzing trace with hash 786631415, now seen corresponding path program 1 times [2020-10-12 15:34:14,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:14,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667994134] [2020-10-12 15:34:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:14,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:14,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:34:14,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 15:34:14,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:34:14,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:34:15,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:34:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:15,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667994134] [2020-10-12 15:34:15,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:15,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:15,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322635069] [2020-10-12 15:34:15,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:15,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:15,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:15,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:15,080 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-10-12 15:34:15,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:15,352 INFO L93 Difference]: Finished difference Result 165 states and 277 transitions. [2020-10-12 15:34:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:15,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-12 15:34:15,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:15,367 INFO L225 Difference]: With dead ends: 165 [2020-10-12 15:34:15,367 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 15:34:15,372 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 [2020-10-12 15:34:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 15:34:15,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-12 15:34:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 15:34:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-12 15:34:15,422 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 9 [2020-10-12 15:34:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:15,422 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-12 15:34:15,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-12 15:34:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 15:34:15,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:15,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:15,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:34:15,425 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]=== [2020-10-12 15:34:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:15,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1923530661, now seen corresponding path program 1 times [2020-10-12 15:34:15,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:15,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740730627] [2020-10-12 15:34:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:34:15,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 15:34:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:34:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:34:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:15,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:34:15,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:15,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:15,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740730627] [2020-10-12 15:34:15,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:15,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:15,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171801281] [2020-10-12 15:34:15,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:15,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:15,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:15,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:15,688 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-10-12 15:34:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:15,854 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-12 15:34:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:15,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-12 15:34:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:15,856 INFO L225 Difference]: With dead ends: 74 [2020-10-12 15:34:15,856 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 15:34:15,857 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 [2020-10-12 15:34:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 15:34:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-12 15:34:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 15:34:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-12 15:34:15,868 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 13 [2020-10-12 15:34:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:15,869 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-12 15:34:15,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-12 15:34:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 15:34:15,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:15,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:15,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:34:15,871 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]=== [2020-10-12 15:34:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:15,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1449483421, now seen corresponding path program 1 times [2020-10-12 15:34:15,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:15,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281452576] [2020-10-12 15:34:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:34:15,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:34:15,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:34:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:15,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:15,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:15,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281452576] [2020-10-12 15:34:15,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:15,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:15,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481912479] [2020-10-12 15:34:15,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:15,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:15,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:15,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:15,957 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 4 states. [2020-10-12 15:34:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:16,134 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2020-10-12 15:34:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:16,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-12 15:34:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:16,136 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:34:16,136 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 15:34:16,137 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 [2020-10-12 15:34:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 15:34:16,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-12 15:34:16,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 15:34:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-10-12 15:34:16,149 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 16 [2020-10-12 15:34:16,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:16,150 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-10-12 15:34:16,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-10-12 15:34:16,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:34:16,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:16,151 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] [2020-10-12 15:34:16,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:34:16,152 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]=== [2020-10-12 15:34:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:16,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1095322203, now seen corresponding path program 1 times [2020-10-12 15:34:16,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:16,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452768374] [2020-10-12 15:34:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:34:16,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:16,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-12 15:34:16,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:16,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:16,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:16,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:16,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:16,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452768374] [2020-10-12 15:34:16,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:16,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:16,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338939055] [2020-10-12 15:34:16,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:16,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:16,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:16,435 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 6 states. [2020-10-12 15:34:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:16,645 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2020-10-12 15:34:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:16,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-12 15:34:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:16,647 INFO L225 Difference]: With dead ends: 95 [2020-10-12 15:34:16,647 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 15:34:16,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 15:34:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-12 15:34:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 15:34:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2020-10-12 15:34:16,656 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 21 [2020-10-12 15:34:16,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:16,656 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2020-10-12 15:34:16,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2020-10-12 15:34:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:34:16,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:16,657 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] [2020-10-12 15:34:16,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:34:16,658 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]=== [2020-10-12 15:34:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:16,659 INFO L82 PathProgramCache]: Analyzing trace with hash -648846271, now seen corresponding path program 1 times [2020-10-12 15:34:16,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:16,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143122505] [2020-10-12 15:34:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:34:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 15:34:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:16,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:16,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:16,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143122505] [2020-10-12 15:34:16,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:16,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:16,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103670251] [2020-10-12 15:34:16,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:16,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:16,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:16,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:16,918 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 7 states. [2020-10-12 15:34:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:17,180 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-10-12 15:34:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:17,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-12 15:34:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:17,182 INFO L225 Difference]: With dead ends: 138 [2020-10-12 15:34:17,182 INFO L226 Difference]: Without dead ends: 136 [2020-10-12 15:34:17,183 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 [2020-10-12 15:34:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-12 15:34:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 88. [2020-10-12 15:34:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 15:34:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-10-12 15:34:17,192 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 23 [2020-10-12 15:34:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:17,193 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-10-12 15:34:17,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-10-12 15:34:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:34:17,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:17,194 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] [2020-10-12 15:34:17,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:34:17,195 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]=== [2020-10-12 15:34:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:17,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1678311806, now seen corresponding path program 1 times [2020-10-12 15:34:17,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:17,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257182683] [2020-10-12 15:34:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:34:17,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-12 15:34:17,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:34:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:17,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:17,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:17,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:17,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257182683] [2020-10-12 15:34:17,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:17,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:17,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572391385] [2020-10-12 15:34:17,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:17,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:17,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:17,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:17,584 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 7 states. [2020-10-12 15:34:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:17,830 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-10-12 15:34:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:17,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-12 15:34:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:17,832 INFO L225 Difference]: With dead ends: 136 [2020-10-12 15:34:17,833 INFO L226 Difference]: Without dead ends: 134 [2020-10-12 15:34:17,833 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 [2020-10-12 15:34:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-12 15:34:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-10-12 15:34:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 15:34:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-10-12 15:34:17,842 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 24 [2020-10-12 15:34:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:17,843 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-10-12 15:34:17,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-10-12 15:34:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:17,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:17,844 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:17,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:34:17,845 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]=== [2020-10-12 15:34:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:17,845 INFO L82 PathProgramCache]: Analyzing trace with hash 133467485, now seen corresponding path program 1 times [2020-10-12 15:34:17,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:17,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338422956] [2020-10-12 15:34:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:18,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:18,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 15:34:18,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:34:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:18,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:18,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:18,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:18,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338422956] [2020-10-12 15:34:18,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:18,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:18,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933796896] [2020-10-12 15:34:18,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:18,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:18,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:18,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:18,126 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 7 states. [2020-10-12 15:34:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:18,401 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2020-10-12 15:34:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:18,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-12 15:34:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:18,403 INFO L225 Difference]: With dead ends: 134 [2020-10-12 15:34:18,403 INFO L226 Difference]: Without dead ends: 132 [2020-10-12 15:34:18,404 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 [2020-10-12 15:34:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-12 15:34:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2020-10-12 15:34:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 15:34:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2020-10-12 15:34:18,411 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 25 [2020-10-12 15:34:18,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:18,411 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2020-10-12 15:34:18,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2020-10-12 15:34:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:34:18,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:18,413 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:18,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:34:18,413 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]=== [2020-10-12 15:34:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash 876787366, now seen corresponding path program 1 times [2020-10-12 15:34:18,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:18,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349693674] [2020-10-12 15:34:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:34:18,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 15:34:18,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:34:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:34:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:18,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:18,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:18,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349693674] [2020-10-12 15:34:18,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:18,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:18,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441004832] [2020-10-12 15:34:18,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:18,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:18,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:18,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:18,524 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand 4 states. [2020-10-12 15:34:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:18,662 INFO L93 Difference]: Finished difference Result 195 states and 225 transitions. [2020-10-12 15:34:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:18,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-12 15:34:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:18,664 INFO L225 Difference]: With dead ends: 195 [2020-10-12 15:34:18,664 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 15:34:18,665 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 [2020-10-12 15:34:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 15:34:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2020-10-12 15:34:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 15:34:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-12 15:34:18,672 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 27 [2020-10-12 15:34:18,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:18,673 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-12 15:34:18,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-12 15:34:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:34:18,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:18,674 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] [2020-10-12 15:34:18,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:34:18,675 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]=== [2020-10-12 15:34:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:18,675 INFO L82 PathProgramCache]: Analyzing trace with hash -795743119, now seen corresponding path program 1 times [2020-10-12 15:34:18,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:18,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636482346] [2020-10-12 15:34:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:34:18,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:18,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-12 15:34:18,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:18,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:18,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:34:18,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:19,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:19,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:19,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636482346] [2020-10-12 15:34:19,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:19,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:19,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003736063] [2020-10-12 15:34:19,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:19,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:19,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:19,086 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 8 states. [2020-10-12 15:34:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:19,288 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-12 15:34:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:19,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-12 15:34:19,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:19,290 INFO L225 Difference]: With dead ends: 101 [2020-10-12 15:34:19,290 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:34:19,291 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 [2020-10-12 15:34:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:34:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2020-10-12 15:34:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-12 15:34:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-10-12 15:34:19,296 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 31 [2020-10-12 15:34:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:19,296 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-10-12 15:34:19,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-10-12 15:34:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:34:19,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:19,298 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] [2020-10-12 15:34:19,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:34:19,298 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]=== [2020-10-12 15:34:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:19,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1419476814, now seen corresponding path program 1 times [2020-10-12 15:34:19,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:19,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910451223] [2020-10-12 15:34:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:34:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 15:34:19,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:34:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:19,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:19,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:19,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:19,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:19,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910451223] [2020-10-12 15:34:19,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:19,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:19,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835769504] [2020-10-12 15:34:19,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:19,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:19,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:19,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:19,668 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 8 states. [2020-10-12 15:34:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:19,877 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-10-12 15:34:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:19,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-12 15:34:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:19,879 INFO L225 Difference]: With dead ends: 86 [2020-10-12 15:34:19,879 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 15:34:19,879 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 [2020-10-12 15:34:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 15:34:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-12 15:34:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 15:34:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-10-12 15:34:19,884 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 32 [2020-10-12 15:34:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:19,884 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-10-12 15:34:19,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-10-12 15:34:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:19,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:19,890 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] [2020-10-12 15:34:19,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:34:19,891 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]=== [2020-10-12 15:34:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash 922995253, now seen corresponding path program 1 times [2020-10-12 15:34:19,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:19,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205143501] [2020-10-12 15:34:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:20,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 15:34:20,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:34:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:34:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:20,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:20,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:20,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:20,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:20,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205143501] [2020-10-12 15:34:20,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:20,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:20,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893705430] [2020-10-12 15:34:20,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:20,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:20,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:20,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:20,065 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 5 states. [2020-10-12 15:34:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:20,199 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2020-10-12 15:34:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:20,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-12 15:34:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:20,200 INFO L225 Difference]: With dead ends: 159 [2020-10-12 15:34:20,201 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 15:34:20,201 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 [2020-10-12 15:34:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 15:34:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-12 15:34:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 15:34:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-10-12 15:34:20,206 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 33 [2020-10-12 15:34:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:20,206 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-10-12 15:34:20,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-10-12 15:34:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:20,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:20,207 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] [2020-10-12 15:34:20,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:34:20,208 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]=== [2020-10-12 15:34:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:20,208 INFO L82 PathProgramCache]: Analyzing trace with hash 922997175, now seen corresponding path program 1 times [2020-10-12 15:34:20,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:20,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650229688] [2020-10-12 15:34:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:20,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 15:34:20,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:34:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:20,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:20,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:20,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:20,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:20,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650229688] [2020-10-12 15:34:20,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:20,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:20,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447809512] [2020-10-12 15:34:20,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:20,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:20,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:20,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:20,486 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 8 states. [2020-10-12 15:34:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:20,806 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-10-12 15:34:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:20,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-12 15:34:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:20,808 INFO L225 Difference]: With dead ends: 112 [2020-10-12 15:34:20,808 INFO L226 Difference]: Without dead ends: 110 [2020-10-12 15:34:20,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-12 15:34:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2020-10-12 15:34:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 15:34:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2020-10-12 15:34:20,815 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 33 [2020-10-12 15:34:20,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:20,816 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2020-10-12 15:34:20,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2020-10-12 15:34:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:20,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:20,817 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] [2020-10-12 15:34:20,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:34:20,817 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]=== [2020-10-12 15:34:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:20,818 INFO L82 PathProgramCache]: Analyzing trace with hash 699517325, now seen corresponding path program 1 times [2020-10-12 15:34:20,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:20,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508786612] [2020-10-12 15:34:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:21,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:21,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-12 15:34:21,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:21,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:21,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:34:21,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:21,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508786612] [2020-10-12 15:34:21,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:21,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:21,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691947014] [2020-10-12 15:34:21,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:21,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:21,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:21,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:21,299 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 8 states. [2020-10-12 15:34:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:21,499 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2020-10-12 15:34:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:21,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-12 15:34:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:21,500 INFO L225 Difference]: With dead ends: 98 [2020-10-12 15:34:21,500 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 15:34:21,501 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 [2020-10-12 15:34:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 15:34:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-12 15:34:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-12 15:34:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-10-12 15:34:21,506 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-10-12 15:34:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:21,507 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-10-12 15:34:21,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-10-12 15:34:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:34:21,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:21,508 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:21,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:34:21,508 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]=== [2020-10-12 15:34:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash -610162986, now seen corresponding path program 1 times [2020-10-12 15:34:21,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:21,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813017626] [2020-10-12 15:34:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:34:21,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-12 15:34:21,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:34:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:21,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:21,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:21,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813017626] [2020-10-12 15:34:21,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:21,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:21,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809153466] [2020-10-12 15:34:21,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:21,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:21,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:21,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:21,848 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 8 states. [2020-10-12 15:34:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:22,174 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-12 15:34:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:22,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-12 15:34:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:22,176 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:34:22,176 INFO L226 Difference]: Without dead ends: 155 [2020-10-12 15:34:22,177 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 [2020-10-12 15:34:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-12 15:34:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 113. [2020-10-12 15:34:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-12 15:34:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-10-12 15:34:22,184 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 35 [2020-10-12 15:34:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:22,186 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-10-12 15:34:22,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-10-12 15:34:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:34:22,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:22,187 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] [2020-10-12 15:34:22,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:34:22,187 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]=== [2020-10-12 15:34:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:22,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2040823409, now seen corresponding path program 1 times [2020-10-12 15:34:22,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:22,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513381588] [2020-10-12 15:34:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:34:22,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-12 15:34:22,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:34:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:22,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:22,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513381588] [2020-10-12 15:34:22,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:22,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:22,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746027699] [2020-10-12 15:34:22,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:22,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:22,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:22,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:22,739 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 10 states. [2020-10-12 15:34:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:23,269 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-12 15:34:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:23,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-12 15:34:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:23,270 INFO L225 Difference]: With dead ends: 165 [2020-10-12 15:34:23,271 INFO L226 Difference]: Without dead ends: 163 [2020-10-12 15:34:23,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-12 15:34:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-10-12 15:34:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 15:34:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-10-12 15:34:23,279 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 36 [2020-10-12 15:34:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:23,279 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-10-12 15:34:23,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-10-12 15:34:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:34:23,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:23,280 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] [2020-10-12 15:34:23,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:34:23,280 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]=== [2020-10-12 15:34:23,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:23,281 INFO L82 PathProgramCache]: Analyzing trace with hash 143436019, now seen corresponding path program 1 times [2020-10-12 15:34:23,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:23,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509061463] [2020-10-12 15:34:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:34:23,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:23,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-12 15:34:23,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:34:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:23,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:23,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:23,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509061463] [2020-10-12 15:34:23,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:23,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:23,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340924530] [2020-10-12 15:34:23,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:23,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:23,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:23,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:23,691 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 8 states. [2020-10-12 15:34:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:24,155 INFO L93 Difference]: Finished difference Result 161 states and 172 transitions. [2020-10-12 15:34:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:24,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-12 15:34:24,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:24,157 INFO L225 Difference]: With dead ends: 161 [2020-10-12 15:34:24,157 INFO L226 Difference]: Without dead ends: 159 [2020-10-12 15:34:24,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:24,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-12 15:34:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 129. [2020-10-12 15:34:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 15:34:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2020-10-12 15:34:24,167 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 36 [2020-10-12 15:34:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:24,168 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2020-10-12 15:34:24,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2020-10-12 15:34:24,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:34:24,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:24,169 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] [2020-10-12 15:34:24,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:34:24,169 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]=== [2020-10-12 15:34:24,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:24,169 INFO L82 PathProgramCache]: Analyzing trace with hash -385872481, now seen corresponding path program 1 times [2020-10-12 15:34:24,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:24,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013000093] [2020-10-12 15:34:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:24,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:34:24,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 15:34:24,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:34:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:34:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:34:24,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013000093] [2020-10-12 15:34:24,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:24,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:24,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804466646] [2020-10-12 15:34:24,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:24,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:24,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:24,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:24,417 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand 4 states. [2020-10-12 15:34:24,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:24,532 INFO L93 Difference]: Finished difference Result 192 states and 211 transitions. [2020-10-12 15:34:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:24,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 15:34:24,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:24,534 INFO L225 Difference]: With dead ends: 192 [2020-10-12 15:34:24,534 INFO L226 Difference]: Without dead ends: 140 [2020-10-12 15:34:24,537 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 [2020-10-12 15:34:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-12 15:34:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2020-10-12 15:34:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-12 15:34:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-10-12 15:34:24,547 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 39 [2020-10-12 15:34:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:24,547 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-10-12 15:34:24,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-10-12 15:34:24,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:34:24,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:24,548 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] [2020-10-12 15:34:24,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:34:24,549 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]=== [2020-10-12 15:34:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:24,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1727270787, now seen corresponding path program 1 times [2020-10-12 15:34:24,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:24,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438796] [2020-10-12 15:34:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:34:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 15:34:24,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:34:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:24,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:24,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438796] [2020-10-12 15:34:24,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:24,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:24,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711689080] [2020-10-12 15:34:24,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:24,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:24,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:24,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:24,911 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 9 states. [2020-10-12 15:34:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:25,389 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-10-12 15:34:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:25,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-12 15:34:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:25,392 INFO L225 Difference]: With dead ends: 152 [2020-10-12 15:34:25,392 INFO L226 Difference]: Without dead ends: 121 [2020-10-12 15:34:25,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-12 15:34:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-12 15:34:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 15:34:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2020-10-12 15:34:25,405 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 41 [2020-10-12 15:34:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:25,406 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2020-10-12 15:34:25,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2020-10-12 15:34:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:34:25,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:25,407 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-12 15:34:25,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:34:25,410 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]=== [2020-10-12 15:34:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:25,411 INFO L82 PathProgramCache]: Analyzing trace with hash 971335430, now seen corresponding path program 2 times [2020-10-12 15:34:25,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:25,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324000325] [2020-10-12 15:34:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:34:25,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:25,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 15:34:25,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:25,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:34:25,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:34:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:25,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:25,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:34:25,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324000325] [2020-10-12 15:34:25,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:25,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:25,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747573165] [2020-10-12 15:34:25,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:25,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:25,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:25,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:25,589 INFO L87 Difference]: Start difference. First operand 121 states and 133 transitions. Second operand 4 states. [2020-10-12 15:34:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:25,708 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2020-10-12 15:34:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:25,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-12 15:34:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:25,709 INFO L225 Difference]: With dead ends: 185 [2020-10-12 15:34:25,709 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:34:25,710 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 [2020-10-12 15:34:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:34:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-12 15:34:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 15:34:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2020-10-12 15:34:25,718 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 43 [2020-10-12 15:34:25,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:25,718 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2020-10-12 15:34:25,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2020-10-12 15:34:25,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:34:25,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:25,719 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] [2020-10-12 15:34:25,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:34:25,720 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]=== [2020-10-12 15:34:25,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:25,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1357539163, now seen corresponding path program 1 times [2020-10-12 15:34:25,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:25,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302239112] [2020-10-12 15:34:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:34:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-12 15:34:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:34:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:26,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:26,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:26,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:26,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302239112] [2020-10-12 15:34:26,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:26,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:26,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034570001] [2020-10-12 15:34:26,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:26,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:26,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:26,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:26,349 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand 10 states. [2020-10-12 15:34:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:26,775 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-12 15:34:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:26,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-12 15:34:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:26,777 INFO L225 Difference]: With dead ends: 121 [2020-10-12 15:34:26,777 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 15:34:26,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 15:34:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2020-10-12 15:34:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 15:34:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2020-10-12 15:34:26,784 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 44 [2020-10-12 15:34:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:26,785 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2020-10-12 15:34:26,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2020-10-12 15:34:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:34:26,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:26,786 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] [2020-10-12 15:34:26,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:34:26,786 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]=== [2020-10-12 15:34:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash 410027869, now seen corresponding path program 1 times [2020-10-12 15:34:26,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:26,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681962187] [2020-10-12 15:34:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:27,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:34:27,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-12 15:34:27,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:34:27,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:27,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:27,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:27,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:27,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:27,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681962187] [2020-10-12 15:34:27,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:27,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:27,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980367483] [2020-10-12 15:34:27,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:27,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:27,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:27,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:27,387 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand 9 states. [2020-10-12 15:34:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:27,678 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-12 15:34:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:27,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-12 15:34:27,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:27,679 INFO L225 Difference]: With dead ends: 107 [2020-10-12 15:34:27,679 INFO L226 Difference]: Without dead ends: 105 [2020-10-12 15:34:27,680 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 [2020-10-12 15:34:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-12 15:34:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-12 15:34:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 15:34:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2020-10-12 15:34:27,686 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 44 [2020-10-12 15:34:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:27,686 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2020-10-12 15:34:27,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2020-10-12 15:34:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:34:27,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:27,687 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] [2020-10-12 15:34:27,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:34:27,688 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]=== [2020-10-12 15:34:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:27,688 INFO L82 PathProgramCache]: Analyzing trace with hash -479677976, now seen corresponding path program 1 times [2020-10-12 15:34:27,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:27,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297213356] [2020-10-12 15:34:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:34:28,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:28,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-12 15:34:28,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:34:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:28,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:28,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:28,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297213356] [2020-10-12 15:34:28,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:28,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:28,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266278256] [2020-10-12 15:34:28,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:28,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:28,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:28,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:28,681 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 11 states. [2020-10-12 15:34:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:29,037 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-12 15:34:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:29,039 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-12 15:34:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:29,040 INFO L225 Difference]: With dead ends: 115 [2020-10-12 15:34:29,040 INFO L226 Difference]: Without dead ends: 113 [2020-10-12 15:34:29,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-12 15:34:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2020-10-12 15:34:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 15:34:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2020-10-12 15:34:29,046 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 45 [2020-10-12 15:34:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:29,046 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2020-10-12 15:34:29,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2020-10-12 15:34:29,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:34:29,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:29,047 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] [2020-10-12 15:34:29,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:34:29,047 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]=== [2020-10-12 15:34:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:29,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1704581452, now seen corresponding path program 1 times [2020-10-12 15:34:29,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:29,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069994007] [2020-10-12 15:34:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:34:29,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-12 15:34:29,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:34:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:29,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:29,592 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:29,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069994007] [2020-10-12 15:34:29,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:29,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:29,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059217758] [2020-10-12 15:34:29,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:29,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:29,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:29,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:29,594 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 9 states. [2020-10-12 15:34:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:29,846 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-12 15:34:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:29,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-12 15:34:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:29,847 INFO L225 Difference]: With dead ends: 105 [2020-10-12 15:34:29,847 INFO L226 Difference]: Without dead ends: 103 [2020-10-12 15:34:29,848 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 [2020-10-12 15:34:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-12 15:34:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-12 15:34:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 15:34:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-10-12 15:34:29,854 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 45 [2020-10-12 15:34:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:29,855 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-10-12 15:34:29,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-10-12 15:34:29,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:34:29,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:29,856 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] [2020-10-12 15:34:29,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:34:29,856 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]=== [2020-10-12 15:34:29,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:29,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1791840934, now seen corresponding path program 1 times [2020-10-12 15:34:29,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:29,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730304370] [2020-10-12 15:34:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:34:30,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-12 15:34:30,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:34:30,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:30,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:30,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:30,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:30,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730304370] [2020-10-12 15:34:30,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:30,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:30,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562342639] [2020-10-12 15:34:30,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:30,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:30,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:30,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:30,478 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 9 states. [2020-10-12 15:34:30,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:30,870 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2020-10-12 15:34:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:30,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-12 15:34:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:30,872 INFO L225 Difference]: With dead ends: 161 [2020-10-12 15:34:30,872 INFO L226 Difference]: Without dead ends: 159 [2020-10-12 15:34:30,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-12 15:34:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2020-10-12 15:34:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-12 15:34:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2020-10-12 15:34:30,881 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 48 [2020-10-12 15:34:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:30,882 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2020-10-12 15:34:30,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2020-10-12 15:34:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 15:34:30,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:30,883 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] [2020-10-12 15:34:30,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:34:30,883 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]=== [2020-10-12 15:34:30,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:30,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1411094306, now seen corresponding path program 1 times [2020-10-12 15:34:30,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:30,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693872554] [2020-10-12 15:34:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:31,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 15:34:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-12 15:34:31,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:34:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:31,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:31,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:31,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:31,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693872554] [2020-10-12 15:34:31,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:31,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:31,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422255781] [2020-10-12 15:34:31,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:31,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:31,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:31,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:31,817 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand 9 states. [2020-10-12 15:34:32,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:32,327 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2020-10-12 15:34:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:32,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-12 15:34:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:32,329 INFO L225 Difference]: With dead ends: 159 [2020-10-12 15:34:32,329 INFO L226 Difference]: Without dead ends: 157 [2020-10-12 15:34:32,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-12 15:34:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 130. [2020-10-12 15:34:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-12 15:34:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2020-10-12 15:34:32,340 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 51 [2020-10-12 15:34:32,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:32,340 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2020-10-12 15:34:32,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2020-10-12 15:34:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:34:32,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:32,341 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] [2020-10-12 15:34:32,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:34:32,342 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]=== [2020-10-12 15:34:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash 189579559, now seen corresponding path program 2 times [2020-10-12 15:34:32,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:32,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746242243] [2020-10-12 15:34:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:32,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:34:32,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-12 15:34:32,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:34:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:33,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:33,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746242243] [2020-10-12 15:34:33,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:33,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:33,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856019417] [2020-10-12 15:34:33,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:33,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:33,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:33,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:33,142 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 11 states. [2020-10-12 15:34:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:33,703 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-12 15:34:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:33,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-12 15:34:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:33,705 INFO L225 Difference]: With dead ends: 150 [2020-10-12 15:34:33,705 INFO L226 Difference]: Without dead ends: 108 [2020-10-12 15:34:33,705 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 [2020-10-12 15:34:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-12 15:34:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-12 15:34:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 15:34:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions. [2020-10-12 15:34:33,711 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 52 [2020-10-12 15:34:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:33,711 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions. [2020-10-12 15:34:33,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions. [2020-10-12 15:34:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 15:34:33,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:33,712 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] [2020-10-12 15:34:33,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:34:33,713 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]=== [2020-10-12 15:34:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:33,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1315819852, now seen corresponding path program 1 times [2020-10-12 15:34:33,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:33,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102413480] [2020-10-12 15:34:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:33,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:34,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:34,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 15:34:34,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-12 15:34:34,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 15:34:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:34,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:34,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:34,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102413480] [2020-10-12 15:34:34,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:34,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:34,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287929941] [2020-10-12 15:34:34,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:34,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:34,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:34,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:34,763 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand 12 states. [2020-10-12 15:34:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:35,325 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2020-10-12 15:34:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:35,326 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-12 15:34:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:35,327 INFO L225 Difference]: With dead ends: 147 [2020-10-12 15:34:35,327 INFO L226 Difference]: Without dead ends: 145 [2020-10-12 15:34:35,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:34:35,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-12 15:34:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2020-10-12 15:34:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-12 15:34:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2020-10-12 15:34:35,335 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 53 [2020-10-12 15:34:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:35,335 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2020-10-12 15:34:35,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:35,336 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2020-10-12 15:34:35,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:34:35,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:35,336 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] [2020-10-12 15:34:35,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:34:35,337 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]=== [2020-10-12 15:34:35,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:35,337 INFO L82 PathProgramCache]: Analyzing trace with hash 421512575, now seen corresponding path program 2 times [2020-10-12 15:34:35,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:35,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199524998] [2020-10-12 15:34:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:36,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 15:34:36,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:36,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-12 15:34:36,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:36,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 15:34:36,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:36,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:36,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:36,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:36,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199524998] [2020-10-12 15:34:36,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:36,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:36,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49426557] [2020-10-12 15:34:36,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:36,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:36,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:36,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:36,470 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand 10 states. [2020-10-12 15:34:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:36,932 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2020-10-12 15:34:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:36,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-12 15:34:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:36,933 INFO L225 Difference]: With dead ends: 127 [2020-10-12 15:34:36,934 INFO L226 Difference]: Without dead ends: 125 [2020-10-12 15:34:36,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-12 15:34:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-12 15:34:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-12 15:34:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2020-10-12 15:34:36,941 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 57 [2020-10-12 15:34:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:36,942 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2020-10-12 15:34:36,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2020-10-12 15:34:36,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:34:36,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:36,943 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] [2020-10-12 15:34:36,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:34:36,943 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]=== [2020-10-12 15:34:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:36,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1199088795, now seen corresponding path program 2 times [2020-10-12 15:34:36,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:36,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793130562] [2020-10-12 15:34:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:34:37,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-10-12 15:34:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:34:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:38,179 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-12 15:34:38,339 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-12 15:34:38,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:38,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:38,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:38,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793130562] [2020-10-12 15:34:38,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:38,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:38,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288997885] [2020-10-12 15:34:38,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:38,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:38,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:38,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:38,625 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand 11 states. [2020-10-12 15:34:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:39,600 INFO L93 Difference]: Finished difference Result 181 states and 190 transitions. [2020-10-12 15:34:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:39,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-12 15:34:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:39,601 INFO L225 Difference]: With dead ends: 181 [2020-10-12 15:34:39,602 INFO L226 Difference]: Without dead ends: 179 [2020-10-12 15:34:39,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:34:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-12 15:34:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 152. [2020-10-12 15:34:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-12 15:34:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2020-10-12 15:34:39,613 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 60 [2020-10-12 15:34:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:39,614 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2020-10-12 15:34:39,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2020-10-12 15:34:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 15:34:39,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:39,615 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] [2020-10-12 15:34:39,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:34:39,615 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]=== [2020-10-12 15:34:39,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:39,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1828184192, now seen corresponding path program 2 times [2020-10-12 15:34:39,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:39,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535353531] [2020-10-12 15:34:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:40,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:40,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 15:34:40,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-12 15:34:40,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:34:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 15:34:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:40,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:40,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:40,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:40,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:40,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535353531] [2020-10-12 15:34:40,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:40,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:40,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761294142] [2020-10-12 15:34:40,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:40,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:40,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:40,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:40,757 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand 12 states. [2020-10-12 15:34:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:41,435 INFO L93 Difference]: Finished difference Result 180 states and 189 transitions. [2020-10-12 15:34:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:41,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-12 15:34:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:41,437 INFO L225 Difference]: With dead ends: 180 [2020-10-12 15:34:41,437 INFO L226 Difference]: Without dead ends: 178 [2020-10-12 15:34:41,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-12 15:34:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 160. [2020-10-12 15:34:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-12 15:34:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2020-10-12 15:34:41,448 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 61 [2020-10-12 15:34:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:41,449 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions. [2020-10-12 15:34:41,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions. [2020-10-12 15:34:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 15:34:41,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:41,450 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] [2020-10-12 15:34:41,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:34:41,450 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]=== [2020-10-12 15:34:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:41,450 INFO L82 PathProgramCache]: Analyzing trace with hash 558013307, now seen corresponding path program 3 times [2020-10-12 15:34:41,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:41,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015171573] [2020-10-12 15:34:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:42,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:34:42,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1252 [2020-10-12 15:34:42,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:34:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:34:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:43,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:43,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:43,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:43,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:43,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:43,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015171573] [2020-10-12 15:34:43,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:43,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:34:43,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123493277] [2020-10-12 15:34:43,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:34:43,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:34:43,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:43,177 INFO L87 Difference]: Start difference. First operand 160 states and 169 transitions. Second operand 13 states. [2020-10-12 15:34:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:43,768 INFO L93 Difference]: Finished difference Result 178 states and 187 transitions. [2020-10-12 15:34:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:43,769 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-12 15:34:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:43,771 INFO L225 Difference]: With dead ends: 178 [2020-10-12 15:34:43,771 INFO L226 Difference]: Without dead ends: 176 [2020-10-12 15:34:43,772 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 [2020-10-12 15:34:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-12 15:34:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 160. [2020-10-12 15:34:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-12 15:34:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2020-10-12 15:34:43,783 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 62 [2020-10-12 15:34:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:43,783 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions. [2020-10-12 15:34:43,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:34:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions. [2020-10-12 15:34:43,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 15:34:43,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:43,784 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] [2020-10-12 15:34:43,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:34:43,785 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]=== [2020-10-12 15:34:43,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:43,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2115404876, now seen corresponding path program 4 times [2020-10-12 15:34:43,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:43,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434608212] [2020-10-12 15:34:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-12 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:44,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 15:34:44,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:44,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:44,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:44,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:44,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:44,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434608212] [2020-10-12 15:34:44,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:44,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:34:44,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869444810] [2020-10-12 15:34:44,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:34:44,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:44,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:34:44,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:44,811 INFO L87 Difference]: Start difference. First operand 160 states and 169 transitions. Second operand 13 states. [2020-10-12 15:34:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:45,563 INFO L93 Difference]: Finished difference Result 188 states and 197 transitions. [2020-10-12 15:34:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:45,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-12 15:34:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:45,565 INFO L225 Difference]: With dead ends: 188 [2020-10-12 15:34:45,565 INFO L226 Difference]: Without dead ends: 123 [2020-10-12 15:34:45,566 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 [2020-10-12 15:34:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-12 15:34:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-12 15:34:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-12 15:34:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2020-10-12 15:34:45,588 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 69 [2020-10-12 15:34:45,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:45,588 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2020-10-12 15:34:45,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:34:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2020-10-12 15:34:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 15:34:45,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:45,589 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] [2020-10-12 15:34:45,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:34:45,590 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]=== [2020-10-12 15:34:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:45,590 INFO L82 PathProgramCache]: Analyzing trace with hash 30363838, now seen corresponding path program 3 times [2020-10-12 15:34:45,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:45,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001538149] [2020-10-12 15:34:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:47,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 15:34:47,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:47,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-10-12 15:34:47,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:34:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 15:34:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:47,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:47,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:47,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:47,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:47,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001538149] [2020-10-12 15:34:47,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:47,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:47,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013433399] [2020-10-12 15:34:47,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:47,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:47,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:47,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:47,580 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand 12 states. [2020-10-12 15:34:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:48,147 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2020-10-12 15:34:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:48,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-12 15:34:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:48,148 INFO L225 Difference]: With dead ends: 123 [2020-10-12 15:34:48,148 INFO L226 Difference]: Without dead ends: 121 [2020-10-12 15:34:48,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-12 15:34:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 94. [2020-10-12 15:34:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 15:34:48,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2020-10-12 15:34:48,160 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 69 [2020-10-12 15:34:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:48,161 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2020-10-12 15:34:48,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2020-10-12 15:34:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 15:34:48,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:48,162 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:48,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:34:48,162 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]=== [2020-10-12 15:34:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:48,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1925109063, now seen corresponding path program 5 times [2020-10-12 15:34:48,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:48,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603524307] [2020-10-12 15:34:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:48,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:49,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:49,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 15:34:49,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-12 15:34:49,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:34:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:34:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:49,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:49,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603524307] [2020-10-12 15:34:49,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:49,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:34:49,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11922245] [2020-10-12 15:34:49,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:34:49,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:49,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:34:49,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:49,871 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand 14 states. [2020-10-12 15:34:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:50,721 INFO L93 Difference]: Finished difference Result 168 states and 174 transitions. [2020-10-12 15:34:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:34:50,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-12 15:34:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:50,724 INFO L225 Difference]: With dead ends: 168 [2020-10-12 15:34:50,724 INFO L226 Difference]: Without dead ends: 166 [2020-10-12 15:34:50,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:34:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-12 15:34:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 140. [2020-10-12 15:34:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-12 15:34:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 146 transitions. [2020-10-12 15:34:50,735 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 146 transitions. Word has length 70 [2020-10-12 15:34:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:50,736 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 146 transitions. [2020-10-12 15:34:50,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:34:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 146 transitions. [2020-10-12 15:34:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 15:34:50,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:50,737 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] [2020-10-12 15:34:50,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:34:50,737 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]=== [2020-10-12 15:34:50,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:50,738 INFO L82 PathProgramCache]: Analyzing trace with hash -344292589, now seen corresponding path program 6 times [2020-10-12 15:34:50,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:50,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811516765] [2020-10-12 15:34:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:51,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:51,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 15:34:51,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-12 15:34:51,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:34:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 15:34:51,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:52,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:52,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:52,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:52,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:52,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:52,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:52,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811516765] [2020-10-12 15:34:52,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:52,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:34:52,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879105860] [2020-10-12 15:34:52,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:34:52,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:52,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:34:52,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:52,465 INFO L87 Difference]: Start difference. First operand 140 states and 146 transitions. Second operand 14 states. [2020-10-12 15:34:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:53,826 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2020-10-12 15:34:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:34:53,827 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2020-10-12 15:34:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:53,828 INFO L225 Difference]: With dead ends: 176 [2020-10-12 15:34:53,828 INFO L226 Difference]: Without dead ends: 174 [2020-10-12 15:34:53,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:34:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-12 15:34:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 148. [2020-10-12 15:34:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-12 15:34:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 154 transitions. [2020-10-12 15:34:53,845 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 154 transitions. Word has length 78 [2020-10-12 15:34:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:53,845 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 154 transitions. [2020-10-12 15:34:53,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:34:53,845 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 154 transitions. [2020-10-12 15:34:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 15:34:53,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:53,846 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:53,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:34:53,847 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]=== [2020-10-12 15:34:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1311068320, now seen corresponding path program 7 times [2020-10-12 15:34:53,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:53,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373028875] [2020-10-12 15:34:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:55,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:55,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 15:34:55,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1786 [2020-10-12 15:34:55,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:34:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 15:34:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:55,899 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-12 15:34:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:56,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:56,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:56,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:56,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:56,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373028875] [2020-10-12 15:34:56,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:56,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:34:56,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463960891] [2020-10-12 15:34:56,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:34:56,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:56,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:34:56,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:34:56,356 INFO L87 Difference]: Start difference. First operand 148 states and 154 transitions. Second operand 15 states. [2020-10-12 15:34:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:57,328 INFO L93 Difference]: Finished difference Result 174 states and 180 transitions. [2020-10-12 15:34:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:34:57,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 79 [2020-10-12 15:34:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:57,329 INFO L225 Difference]: With dead ends: 174 [2020-10-12 15:34:57,329 INFO L226 Difference]: Without dead ends: 172 [2020-10-12 15:34:57,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:34:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-12 15:34:57,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 148. [2020-10-12 15:34:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-12 15:34:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 154 transitions. [2020-10-12 15:34:57,341 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 154 transitions. Word has length 79 [2020-10-12 15:34:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:57,341 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 154 transitions. [2020-10-12 15:34:57,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:34:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 154 transitions. [2020-10-12 15:34:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 15:34:57,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:57,343 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] [2020-10-12 15:34:57,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 15:34:57,343 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]=== [2020-10-12 15:34:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:57,344 INFO L82 PathProgramCache]: Analyzing trace with hash -557734689, now seen corresponding path program 8 times [2020-10-12 15:34:57,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:57,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851027631] [2020-10-12 15:34:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:58,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:58,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 15:34:58,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-12 15:34:58,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:34:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 15:34:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:58,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:58,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:58,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:58,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:58,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:58,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:58,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:58,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:58,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:58,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 16 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:58,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851027631] [2020-10-12 15:34:58,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:58,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:34:58,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070362419] [2020-10-12 15:34:58,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:34:58,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:58,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:34:58,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:34:58,929 INFO L87 Difference]: Start difference. First operand 148 states and 154 transitions. Second operand 15 states. [2020-10-12 15:35:00,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:00,141 INFO L93 Difference]: Finished difference Result 184 states and 190 transitions. [2020-10-12 15:35:00,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:00,142 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 86 [2020-10-12 15:35:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:00,142 INFO L225 Difference]: With dead ends: 184 [2020-10-12 15:35:00,143 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 15:35:00,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:35:00,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 15:35:00,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-12 15:35:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-12 15:35:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2020-10-12 15:35:00,153 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 86 [2020-10-12 15:35:00,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:00,153 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2020-10-12 15:35:00,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:35:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2020-10-12 15:35:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 15:35:00,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:00,154 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] [2020-10-12 15:35:00,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 15:35:00,155 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]=== [2020-10-12 15:35:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1597295572, now seen corresponding path program 9 times [2020-10-12 15:35:00,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:00,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289285100] [2020-10-12 15:35:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:00,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:01,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 15:35:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-10-12 15:35:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:35:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 15:35:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:02,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:02,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:02,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:02,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289285100] [2020-10-12 15:35:02,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:02,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:35:02,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851302736] [2020-10-12 15:35:02,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:35:02,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:02,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:35:02,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:35:02,471 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand 16 states. [2020-10-12 15:35:03,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:03,682 INFO L93 Difference]: Finished difference Result 193 states and 199 transitions. [2020-10-12 15:35:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:03,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-10-12 15:35:03,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:03,684 INFO L225 Difference]: With dead ends: 193 [2020-10-12 15:35:03,684 INFO L226 Difference]: Without dead ends: 191 [2020-10-12 15:35:03,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:35:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-12 15:35:03,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-10-12 15:35:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 15:35:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 163 transitions. [2020-10-12 15:35:03,697 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 163 transitions. Word has length 87 [2020-10-12 15:35:03,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:03,697 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 163 transitions. [2020-10-12 15:35:03,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:35:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 163 transitions. [2020-10-12 15:35:03,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 15:35:03,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:03,699 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] [2020-10-12 15:35:03,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 15:35:03,699 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]=== [2020-10-12 15:35:03,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:03,699 INFO L82 PathProgramCache]: Analyzing trace with hash 260058360, now seen corresponding path program 10 times [2020-10-12 15:35:03,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:03,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762832735] [2020-10-12 15:35:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:03,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 15:35:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1786 [2020-10-12 15:35:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:35:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 15:35:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:06,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:06,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:06,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762832735] [2020-10-12 15:35:06,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:06,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:35:06,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950778330] [2020-10-12 15:35:06,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:35:06,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:06,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:35:06,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:35:06,204 INFO L87 Difference]: Start difference. First operand 157 states and 163 transitions. Second operand 16 states. [2020-10-12 15:35:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:07,652 INFO L93 Difference]: Finished difference Result 201 states and 207 transitions. [2020-10-12 15:35:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:35:07,653 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 95 [2020-10-12 15:35:07,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:07,654 INFO L225 Difference]: With dead ends: 201 [2020-10-12 15:35:07,655 INFO L226 Difference]: Without dead ends: 199 [2020-10-12 15:35:07,655 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 [2020-10-12 15:35:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-12 15:35:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 165. [2020-10-12 15:35:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-12 15:35:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 171 transitions. [2020-10-12 15:35:07,669 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 171 transitions. Word has length 95 [2020-10-12 15:35:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:07,669 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 171 transitions. [2020-10-12 15:35:07,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:35:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 171 transitions. [2020-10-12 15:35:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 15:35:07,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:07,671 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] [2020-10-12 15:35:07,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 15:35:07,671 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]=== [2020-10-12 15:35:07,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:07,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2015514829, now seen corresponding path program 11 times [2020-10-12 15:35:07,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:07,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553766973] [2020-10-12 15:35:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:07,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:10,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:35:10,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2611 [2020-10-12 15:35:10,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:35:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 15:35:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,709 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-12 15:35:11,108 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-12 15:35:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:11,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:11,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:11,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:11,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553766973] [2020-10-12 15:35:11,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:11,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:35:11,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799610491] [2020-10-12 15:35:11,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:35:11,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:11,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:35:11,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:35:11,514 INFO L87 Difference]: Start difference. First operand 165 states and 171 transitions. Second operand 17 states. [2020-10-12 15:35:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:13,166 INFO L93 Difference]: Finished difference Result 269 states and 278 transitions. [2020-10-12 15:35:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:13,166 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-10-12 15:35:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:13,168 INFO L225 Difference]: With dead ends: 269 [2020-10-12 15:35:13,168 INFO L226 Difference]: Without dead ends: 267 [2020-10-12 15:35:13,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:35:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-12 15:35:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 203. [2020-10-12 15:35:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-12 15:35:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 212 transitions. [2020-10-12 15:35:13,184 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 212 transitions. Word has length 96 [2020-10-12 15:35:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:13,185 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 212 transitions. [2020-10-12 15:35:13,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:35:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 212 transitions. [2020-10-12 15:35:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 15:35:13,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:13,186 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] [2020-10-12 15:35:13,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 15:35:13,187 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]=== [2020-10-12 15:35:13,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:13,187 INFO L82 PathProgramCache]: Analyzing trace with hash -62547516, now seen corresponding path program 12 times [2020-10-12 15:35:13,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:13,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909249119] [2020-10-12 15:35:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:14,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:14,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 15:35:14,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1730 [2020-10-12 15:35:14,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:35:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 15:35:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:15,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:15,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:15,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 20 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:15,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909249119] [2020-10-12 15:35:15,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:15,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:35:15,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125745151] [2020-10-12 15:35:15,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:35:15,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:15,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:35:15,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:35:15,655 INFO L87 Difference]: Start difference. First operand 203 states and 212 transitions. Second operand 17 states. [2020-10-12 15:35:17,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:17,320 INFO L93 Difference]: Finished difference Result 247 states and 256 transitions. [2020-10-12 15:35:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:35:17,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2020-10-12 15:35:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:17,322 INFO L225 Difference]: With dead ends: 247 [2020-10-12 15:35:17,322 INFO L226 Difference]: Without dead ends: 166 [2020-10-12 15:35:17,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:35:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-12 15:35:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-10-12 15:35:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-12 15:35:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2020-10-12 15:35:17,335 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 103 [2020-10-12 15:35:17,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:17,335 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 172 transitions. [2020-10-12 15:35:17,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:35:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 172 transitions. [2020-10-12 15:35:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 15:35:17,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:17,344 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] [2020-10-12 15:35:17,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 15:35:17,345 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]=== [2020-10-12 15:35:17,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:17,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1278824193, now seen corresponding path program 13 times [2020-10-12 15:35:17,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:17,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950521986] [2020-10-12 15:35:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:20,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:20,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 15:35:20,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2857 [2020-10-12 15:35:20,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 15:35:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 15:35:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:21,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950521986] [2020-10-12 15:35:21,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:21,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:35:21,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002607840] [2020-10-12 15:35:21,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:35:21,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:21,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:35:21,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:35:21,275 INFO L87 Difference]: Start difference. First operand 166 states and 172 transitions. Second operand 18 states. [2020-10-12 15:35:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:23,176 INFO L93 Difference]: Finished difference Result 210 states and 216 transitions. [2020-10-12 15:35:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:35:23,177 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-10-12 15:35:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:23,179 INFO L225 Difference]: With dead ends: 210 [2020-10-12 15:35:23,179 INFO L226 Difference]: Without dead ends: 208 [2020-10-12 15:35:23,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:35:23,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-12 15:35:23,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 174. [2020-10-12 15:35:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-12 15:35:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 180 transitions. [2020-10-12 15:35:23,191 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 180 transitions. Word has length 104 [2020-10-12 15:35:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:23,191 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 180 transitions. [2020-10-12 15:35:23,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:35:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 180 transitions. [2020-10-12 15:35:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 15:35:23,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:23,193 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] [2020-10-12 15:35:23,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 15:35:23,194 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]=== [2020-10-12 15:35:23,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:23,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1818733580, now seen corresponding path program 14 times [2020-10-12 15:35:23,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:23,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033258170] [2020-10-12 15:35:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:23,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:26,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:26,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 15:35:26,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3218 [2020-10-12 15:35:26,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 15:35:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 15:35:26,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:27,046 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-12 15:35:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:27,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:27,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:27,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:27,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:27,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033258170] [2020-10-12 15:35:27,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:27,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:35:27,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100957151] [2020-10-12 15:35:27,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:35:27,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:27,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:35:27,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:35:27,620 INFO L87 Difference]: Start difference. First operand 174 states and 180 transitions. Second operand 18 states. [2020-10-12 15:35:28,351 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-12 15:35:28,507 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-12 15:35:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:29,277 INFO L93 Difference]: Finished difference Result 208 states and 214 transitions. [2020-10-12 15:35:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:35:29,278 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 105 [2020-10-12 15:35:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:29,280 INFO L225 Difference]: With dead ends: 208 [2020-10-12 15:35:29,280 INFO L226 Difference]: Without dead ends: 206 [2020-10-12 15:35:29,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:35:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-12 15:35:29,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 174. [2020-10-12 15:35:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-12 15:35:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 180 transitions. [2020-10-12 15:35:29,295 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 180 transitions. Word has length 105 [2020-10-12 15:35:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:29,296 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 180 transitions. [2020-10-12 15:35:29,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:35:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 180 transitions. [2020-10-12 15:35:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 15:35:29,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:29,297 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] [2020-10-12 15:35:29,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 15:35:29,298 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]=== [2020-10-12 15:35:29,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:29,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1369908939, now seen corresponding path program 15 times [2020-10-12 15:35:29,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:29,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808893895] [2020-10-12 15:35:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:31,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:31,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 15:35:31,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2667 [2020-10-12 15:35:31,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 15:35:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 15:35:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:32,473 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 15:35:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:33,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808893895] [2020-10-12 15:35:33,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:33,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:35:33,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874922256] [2020-10-12 15:35:33,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:35:33,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:33,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:35:33,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:35:33,229 INFO L87 Difference]: Start difference. First operand 174 states and 180 transitions. Second operand 18 states. [2020-10-12 15:35:35,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:35,148 INFO L93 Difference]: Finished difference Result 226 states and 232 transitions. [2020-10-12 15:35:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:35,148 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-10-12 15:35:35,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:35,150 INFO L225 Difference]: With dead ends: 226 [2020-10-12 15:35:35,150 INFO L226 Difference]: Without dead ends: 224 [2020-10-12 15:35:35,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:35:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-12 15:35:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 182. [2020-10-12 15:35:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-12 15:35:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 188 transitions. [2020-10-12 15:35:35,168 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 188 transitions. Word has length 112 [2020-10-12 15:35:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:35,168 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 188 transitions. [2020-10-12 15:35:35,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:35:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 188 transitions. [2020-10-12 15:35:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 15:35:35,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:35,170 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] [2020-10-12 15:35:35,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 15:35:35,170 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]=== [2020-10-12 15:35:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:35,171 INFO L82 PathProgramCache]: Analyzing trace with hash 177652952, now seen corresponding path program 16 times [2020-10-12 15:35:35,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:35,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938793696] [2020-10-12 15:35:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:38,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 15:35:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3503 [2020-10-12 15:35:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 15:35:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 15:35:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:39,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:39,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:39,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:39,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:39,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938793696] [2020-10-12 15:35:39,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:39,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:35:39,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434246769] [2020-10-12 15:35:39,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:35:39,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:39,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:35:39,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:35:39,823 INFO L87 Difference]: Start difference. First operand 182 states and 188 transitions. Second operand 19 states. [2020-10-12 15:35:40,780 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 15:35:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:42,039 INFO L93 Difference]: Finished difference Result 302 states and 311 transitions. [2020-10-12 15:35:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:35:42,040 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 113 [2020-10-12 15:35:42,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:42,041 INFO L225 Difference]: With dead ends: 302 [2020-10-12 15:35:42,041 INFO L226 Difference]: Without dead ends: 300 [2020-10-12 15:35:42,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:35:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-12 15:35:42,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 220. [2020-10-12 15:35:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-12 15:35:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 229 transitions. [2020-10-12 15:35:42,063 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 229 transitions. Word has length 113 [2020-10-12 15:35:42,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:42,064 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 229 transitions. [2020-10-12 15:35:42,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:35:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 229 transitions. [2020-10-12 15:35:42,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 15:35:42,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:42,065 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] [2020-10-12 15:35:42,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 15:35:42,065 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]=== [2020-10-12 15:35:42,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:42,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2093682839, now seen corresponding path program 17 times [2020-10-12 15:35:42,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:42,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46574403] [2020-10-12 15:35:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:42,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:44,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 15:35:44,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2891 [2020-10-12 15:35:44,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 15:35:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 15:35:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:45,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:45,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 24 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:45,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46574403] [2020-10-12 15:35:45,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:45,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:35:45,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47078895] [2020-10-12 15:35:45,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:35:45,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:45,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:35:45,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:35:45,807 INFO L87 Difference]: Start difference. First operand 220 states and 229 transitions. Second operand 19 states. [2020-10-12 15:35:48,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:48,088 INFO L93 Difference]: Finished difference Result 272 states and 281 transitions. [2020-10-12 15:35:48,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:48,088 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 120 [2020-10-12 15:35:48,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:48,089 INFO L225 Difference]: With dead ends: 272 [2020-10-12 15:35:48,090 INFO L226 Difference]: Without dead ends: 183 [2020-10-12 15:35:48,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:35:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-12 15:35:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-10-12 15:35:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-12 15:35:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 189 transitions. [2020-10-12 15:35:48,106 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 189 transitions. Word has length 120 [2020-10-12 15:35:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:48,106 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 189 transitions. [2020-10-12 15:35:48,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:35:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 189 transitions. [2020-10-12 15:35:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 15:35:48,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:48,108 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] [2020-10-12 15:35:48,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 15:35:48,108 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]=== [2020-10-12 15:35:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:48,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1699327580, now seen corresponding path program 18 times [2020-10-12 15:35:48,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:48,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609442574] [2020-10-12 15:35:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:52,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 15:35:52,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3907 [2020-10-12 15:35:52,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 15:35:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 15:35:52,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:53,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:53,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:53,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:53,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:53,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:53,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:53,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:53,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:53,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609442574] [2020-10-12 15:35:53,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:53,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:35:53,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869879559] [2020-10-12 15:35:53,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:35:53,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:53,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:35:53,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:35:53,159 INFO L87 Difference]: Start difference. First operand 183 states and 189 transitions. Second operand 20 states. [2020-10-12 15:35:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:55,434 INFO L93 Difference]: Finished difference Result 235 states and 241 transitions. [2020-10-12 15:35:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:35:55,435 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 121 [2020-10-12 15:35:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:55,437 INFO L225 Difference]: With dead ends: 235 [2020-10-12 15:35:55,437 INFO L226 Difference]: Without dead ends: 233 [2020-10-12 15:35:55,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:35:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-12 15:35:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 191. [2020-10-12 15:35:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-12 15:35:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 197 transitions. [2020-10-12 15:35:55,456 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 197 transitions. Word has length 121 [2020-10-12 15:35:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:55,457 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 197 transitions. [2020-10-12 15:35:55,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:35:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 197 transitions. [2020-10-12 15:35:55,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 15:35:55,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:55,458 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 6, 6, 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] [2020-10-12 15:35:55,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 15:35:55,459 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]=== [2020-10-12 15:35:55,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:55,459 INFO L82 PathProgramCache]: Analyzing trace with hash -479398625, now seen corresponding path program 19 times [2020-10-12 15:35:55,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:55,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664437520] [2020-10-12 15:35:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:55,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 15:36:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:00,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4750 [2020-10-12 15:36:00,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 15:36:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 15:36:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:01,037 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-12 15:36:01,198 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-12 15:36:01,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:01,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:01,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:01,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:01,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:01,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:01,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664437520] [2020-10-12 15:36:01,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:01,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:36:01,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637693150] [2020-10-12 15:36:01,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:36:01,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:01,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:36:01,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:36:01,822 INFO L87 Difference]: Start difference. First operand 191 states and 197 transitions. Second operand 20 states. [2020-10-12 15:36:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:03,733 INFO L93 Difference]: Finished difference Result 233 states and 239 transitions. [2020-10-12 15:36:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:36:03,734 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 122 [2020-10-12 15:36:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:03,735 INFO L225 Difference]: With dead ends: 233 [2020-10-12 15:36:03,735 INFO L226 Difference]: Without dead ends: 231 [2020-10-12 15:36:03,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:36:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-12 15:36:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 191. [2020-10-12 15:36:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-12 15:36:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 197 transitions. [2020-10-12 15:36:03,754 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 197 transitions. Word has length 122 [2020-10-12 15:36:03,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:03,755 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 197 transitions. [2020-10-12 15:36:03,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:36:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 197 transitions. [2020-10-12 15:36:03,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 15:36:03,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:03,756 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] [2020-10-12 15:36:03,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 15:36:03,756 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]=== [2020-10-12 15:36:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:03,756 INFO L82 PathProgramCache]: Analyzing trace with hash 789729904, now seen corresponding path program 20 times [2020-10-12 15:36:03,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:03,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091275059] [2020-10-12 15:36:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:08,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:08,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 15:36:08,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4929 [2020-10-12 15:36:08,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 15:36:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 15:36:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:09,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:09,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:09,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:09,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:09,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091275059] [2020-10-12 15:36:09,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:09,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:36:09,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400402154] [2020-10-12 15:36:09,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:36:09,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:09,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:36:09,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:36:09,933 INFO L87 Difference]: Start difference. First operand 191 states and 197 transitions. Second operand 20 states. [2020-10-12 15:36:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:12,719 INFO L93 Difference]: Finished difference Result 251 states and 257 transitions. [2020-10-12 15:36:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 15:36:12,719 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 129 [2020-10-12 15:36:12,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:12,722 INFO L225 Difference]: With dead ends: 251 [2020-10-12 15:36:12,722 INFO L226 Difference]: Without dead ends: 249 [2020-10-12 15:36:12,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:36:12,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-12 15:36:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 199. [2020-10-12 15:36:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-12 15:36:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 205 transitions. [2020-10-12 15:36:12,744 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 205 transitions. Word has length 129 [2020-10-12 15:36:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:12,745 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 205 transitions. [2020-10-12 15:36:12,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:36:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 205 transitions. [2020-10-12 15:36:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 15:36:12,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:12,746 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] [2020-10-12 15:36:12,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 15:36:12,747 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]=== [2020-10-12 15:36:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash 827804395, now seen corresponding path program 21 times [2020-10-12 15:36:12,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:12,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361643621] [2020-10-12 15:36:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:17,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:17,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 15:36:17,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 15:36:17,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 15:36:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 15:36:17,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:18,462 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-12 15:36:18,596 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-12 15:36:18,749 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 15:36:18,911 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-12 15:36:19,090 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-12 15:36:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:19,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:19,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:19,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:19,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:19,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361643621] [2020-10-12 15:36:19,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:19,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:36:19,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11759305] [2020-10-12 15:36:19,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:36:19,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:19,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:36:19,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:36:19,759 INFO L87 Difference]: Start difference. First operand 199 states and 205 transitions. Second operand 21 states. [2020-10-12 15:36:21,166 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-12 15:36:21,392 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 15:36:23,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:23,058 INFO L93 Difference]: Finished difference Result 335 states and 344 transitions. [2020-10-12 15:36:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:36:23,059 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 130 [2020-10-12 15:36:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:23,061 INFO L225 Difference]: With dead ends: 335 [2020-10-12 15:36:23,061 INFO L226 Difference]: Without dead ends: 333 [2020-10-12 15:36:23,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:36:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-12 15:36:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 237. [2020-10-12 15:36:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-12 15:36:23,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 246 transitions. [2020-10-12 15:36:23,084 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 246 transitions. Word has length 130 [2020-10-12 15:36:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:23,085 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 246 transitions. [2020-10-12 15:36:23,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:36:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 246 transitions. [2020-10-12 15:36:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 15:36:23,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:23,086 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] [2020-10-12 15:36:23,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 15:36:23,086 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]=== [2020-10-12 15:36:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash -839465156, now seen corresponding path program 22 times [2020-10-12 15:36:23,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:23,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240224650] [2020-10-12 15:36:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:27,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:27,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 15:36:27,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:27,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4587 [2020-10-12 15:36:27,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 15:36:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 15:36:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:28,279 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-12 15:36:28,430 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-12 15:36:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:28,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:28,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 28 proven. 368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:29,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240224650] [2020-10-12 15:36:29,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:29,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:36:29,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291571319] [2020-10-12 15:36:29,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:36:29,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:29,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:36:29,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:36:29,157 INFO L87 Difference]: Start difference. First operand 237 states and 246 transitions. Second operand 21 states. [2020-10-12 15:36:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:32,236 INFO L93 Difference]: Finished difference Result 297 states and 306 transitions. [2020-10-12 15:36:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:36:32,240 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 137 [2020-10-12 15:36:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:32,242 INFO L225 Difference]: With dead ends: 297 [2020-10-12 15:36:32,242 INFO L226 Difference]: Without dead ends: 200 [2020-10-12 15:36:32,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:36:32,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-12 15:36:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-12 15:36:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-12 15:36:32,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 206 transitions. [2020-10-12 15:36:32,262 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 206 transitions. Word has length 137 [2020-10-12 15:36:32,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:32,262 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 206 transitions. [2020-10-12 15:36:32,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:36:32,263 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 206 transitions. [2020-10-12 15:36:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 15:36:32,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:32,264 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] [2020-10-12 15:36:32,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 15:36:32,264 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]=== [2020-10-12 15:36:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:32,265 INFO L82 PathProgramCache]: Analyzing trace with hash -727378761, now seen corresponding path program 23 times [2020-10-12 15:36:32,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:32,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999943622] [2020-10-12 15:36:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:32,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:37,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:37,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 15:36:37,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 15:36:37,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 15:36:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 15:36:37,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:38,045 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-12 15:36:38,243 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-12 15:36:38,442 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-12 15:36:38,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:38,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:38,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:39,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999943622] [2020-10-12 15:36:39,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:39,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:36:39,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26253428] [2020-10-12 15:36:39,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:36:39,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:39,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:36:39,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:36:39,108 INFO L87 Difference]: Start difference. First operand 200 states and 206 transitions. Second operand 22 states. [2020-10-12 15:36:42,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:42,600 INFO L93 Difference]: Finished difference Result 260 states and 266 transitions. [2020-10-12 15:36:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 15:36:42,601 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 138 [2020-10-12 15:36:42,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:42,603 INFO L225 Difference]: With dead ends: 260 [2020-10-12 15:36:42,603 INFO L226 Difference]: Without dead ends: 258 [2020-10-12 15:36:42,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 15:36:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-12 15:36:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 208. [2020-10-12 15:36:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-12 15:36:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 214 transitions. [2020-10-12 15:36:42,636 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 214 transitions. Word has length 138 [2020-10-12 15:36:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:42,637 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 214 transitions. [2020-10-12 15:36:42,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:36:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 214 transitions. [2020-10-12 15:36:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 15:36:42,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:42,639 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:42,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 15:36:42,640 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]=== [2020-10-12 15:36:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:42,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1042076036, now seen corresponding path program 24 times [2020-10-12 15:36:42,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:42,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589852159] [2020-10-12 15:36:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:42,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:47,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:47,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 15:36:47,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5234 [2020-10-12 15:36:47,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 15:36:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-12 15:36:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:48,734 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-12 15:36:48,922 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2020-10-12 15:36:49,128 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2020-10-12 15:36:49,425 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-12 15:36:49,646 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-12 15:36:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:50,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:50,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:50,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:36:50,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:50,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589852159] [2020-10-12 15:36:50,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:50,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:36:50,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658935625] [2020-10-12 15:36:50,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:36:50,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:36:50,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:36:50,453 INFO L87 Difference]: Start difference. First operand 208 states and 214 transitions. Second operand 22 states. [2020-10-12 15:36:51,774 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-12 15:36:51,997 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-12 15:36:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:53,318 INFO L93 Difference]: Finished difference Result 258 states and 264 transitions. [2020-10-12 15:36:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:36:53,318 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 139 [2020-10-12 15:36:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:53,320 INFO L225 Difference]: With dead ends: 258 [2020-10-12 15:36:53,320 INFO L226 Difference]: Without dead ends: 256 [2020-10-12 15:36:53,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:36:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-12 15:36:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-10-12 15:36:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-12 15:36:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 214 transitions. [2020-10-12 15:36:53,342 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 214 transitions. Word has length 139 [2020-10-12 15:36:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:53,343 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 214 transitions. [2020-10-12 15:36:53,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:36:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 214 transitions. [2020-10-12 15:36:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 15:36:53,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:53,344 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] [2020-10-12 15:36:53,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 15:36:53,344 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]=== [2020-10-12 15:36:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:53,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1130212733, now seen corresponding path program 25 times [2020-10-12 15:36:53,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:53,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675919720] [2020-10-12 15:36:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:58,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:58,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 15:36:58,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-12 15:36:58,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 15:36:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 15:36:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:59,056 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-12 15:36:59,247 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-12 15:36:59,486 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-12 15:36:59,731 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-12 15:37:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:00,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:00,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:00,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:00,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:00,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:00,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675919720] [2020-10-12 15:37:00,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:00,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:37:00,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334007634] [2020-10-12 15:37:00,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:37:00,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:00,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:37:00,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:37:00,650 INFO L87 Difference]: Start difference. First operand 208 states and 214 transitions. Second operand 22 states. [2020-10-12 15:37:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:04,499 INFO L93 Difference]: Finished difference Result 276 states and 282 transitions. [2020-10-12 15:37:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 15:37:04,500 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 146 [2020-10-12 15:37:04,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:04,502 INFO L225 Difference]: With dead ends: 276 [2020-10-12 15:37:04,502 INFO L226 Difference]: Without dead ends: 274 [2020-10-12 15:37:04,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:37:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-12 15:37:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 216. [2020-10-12 15:37:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-12 15:37:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 222 transitions. [2020-10-12 15:37:04,523 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 222 transitions. Word has length 146 [2020-10-12 15:37:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:04,523 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 222 transitions. [2020-10-12 15:37:04,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:37:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 222 transitions. [2020-10-12 15:37:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 15:37:04,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:04,524 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] [2020-10-12 15:37:04,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 15:37:04,524 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]=== [2020-10-12 15:37:04,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:04,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1150619056, now seen corresponding path program 26 times [2020-10-12 15:37:04,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:04,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406698304] [2020-10-12 15:37:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:04,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 15:37:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:37:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 15:37:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 15:37:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 15:37:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:10,278 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-12 15:37:10,438 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-12 15:37:10,612 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-12 15:37:10,808 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-12 15:37:11,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:11,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:11,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:11,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:11,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:11,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406698304] [2020-10-12 15:37:11,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:11,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:37:11,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021921839] [2020-10-12 15:37:11,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:37:11,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:11,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:37:11,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:37:11,561 INFO L87 Difference]: Start difference. First operand 216 states and 222 transitions. Second operand 23 states. [2020-10-12 15:37:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:14,947 INFO L93 Difference]: Finished difference Result 274 states and 280 transitions. [2020-10-12 15:37:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 15:37:14,947 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 147 [2020-10-12 15:37:14,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:14,950 INFO L225 Difference]: With dead ends: 274 [2020-10-12 15:37:14,950 INFO L226 Difference]: Without dead ends: 272 [2020-10-12 15:37:14,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 15:37:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-12 15:37:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 216. [2020-10-12 15:37:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-12 15:37:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 222 transitions. [2020-10-12 15:37:14,976 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 222 transitions. Word has length 147 [2020-10-12 15:37:14,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:14,976 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 222 transitions. [2020-10-12 15:37:14,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:37:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 222 transitions. [2020-10-12 15:37:14,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 15:37:14,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:14,977 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] [2020-10-12 15:37:14,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 15:37:14,978 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]=== [2020-10-12 15:37:14,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:14,978 INFO L82 PathProgramCache]: Analyzing trace with hash -862256049, now seen corresponding path program 27 times [2020-10-12 15:37:14,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:14,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83384841] [2020-10-12 15:37:14,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:20,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:20,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 15:37:20,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:37:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-12 15:37:20,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 15:37:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 15:37:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:20,713 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-12 15:37:20,867 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-12 15:37:21,070 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-12 15:37:21,347 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-12 15:37:21,584 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-10-12 15:37:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:22,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:22,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:22,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:22,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:22,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:22,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:22,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 32 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:22,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83384841] [2020-10-12 15:37:22,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:22,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:37:22,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529349720] [2020-10-12 15:37:22,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:37:22,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:22,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:37:22,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:37:22,381 INFO L87 Difference]: Start difference. First operand 216 states and 222 transitions. Second operand 23 states. [2020-10-12 15:37:24,785 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-10-12 15:37:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:26,760 INFO L93 Difference]: Finished difference Result 284 states and 290 transitions. [2020-10-12 15:37:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:37:26,760 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 154 [2020-10-12 15:37:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:26,761 INFO L225 Difference]: With dead ends: 284 [2020-10-12 15:37:26,761 INFO L226 Difference]: Without dead ends: 179 [2020-10-12 15:37:26,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=120, Invalid=1520, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:37:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-12 15:37:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-12 15:37:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-12 15:37:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2020-10-12 15:37:26,778 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 154 [2020-10-12 15:37:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:26,778 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2020-10-12 15:37:26,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:37:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2020-10-12 15:37:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 15:37:26,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:26,779 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] [2020-10-12 15:37:26,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 15:37:26,779 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]=== [2020-10-12 15:37:26,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:26,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1088321764, now seen corresponding path program 28 times [2020-10-12 15:37:26,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:26,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082048016] [2020-10-12 15:37:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:31,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 15:37:31,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:37:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5159 [2020-10-12 15:37:31,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 15:37:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 15:37:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:32,614 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-12 15:37:32,892 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-12 15:37:33,190 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 15:37:33,344 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 15:37:33,515 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-10-12 15:37:34,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:34,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:34,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:34,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082048016] [2020-10-12 15:37:34,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:34,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 15:37:34,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391245041] [2020-10-12 15:37:34,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 15:37:34,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:34,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 15:37:34,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:37:34,345 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand 24 states. [2020-10-12 15:37:37,269 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-12 15:37:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:38,748 INFO L93 Difference]: Finished difference Result 293 states and 299 transitions. [2020-10-12 15:37:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 15:37:38,749 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 155 [2020-10-12 15:37:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:38,751 INFO L225 Difference]: With dead ends: 293 [2020-10-12 15:37:38,751 INFO L226 Difference]: Without dead ends: 291 [2020-10-12 15:37:38,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=122, Invalid=1438, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 15:37:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-12 15:37:38,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 225. [2020-10-12 15:37:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-12 15:37:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 231 transitions. [2020-10-12 15:37:38,779 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 231 transitions. Word has length 155 [2020-10-12 15:37:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:38,779 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 231 transitions. [2020-10-12 15:37:38,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 15:37:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 231 transitions. [2020-10-12 15:37:38,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 15:37:38,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:38,781 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] [2020-10-12 15:37:38,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 15:37:38,781 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]=== [2020-10-12 15:37:38,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:38,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1670156264, now seen corresponding path program 29 times [2020-10-12 15:37:38,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:38,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029624896] [2020-10-12 15:37:38,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:43,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:43,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 15:37:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:37:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-12 15:37:43,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 15:37:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-12 15:37:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:44,585 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-12 15:37:45,038 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2020-10-12 15:37:45,308 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-12 15:37:45,482 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-10-12 15:37:46,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:46,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:46,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:46,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:46,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:46,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:46,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029624896] [2020-10-12 15:37:46,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:46,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 15:37:46,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561528677] [2020-10-12 15:37:46,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 15:37:46,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:46,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 15:37:46,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:37:46,386 INFO L87 Difference]: Start difference. First operand 225 states and 231 transitions. Second operand 24 states. [2020-10-12 15:37:48,845 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-12 15:37:49,357 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-12 15:37:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:51,221 INFO L93 Difference]: Finished difference Result 301 states and 307 transitions. [2020-10-12 15:37:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 15:37:51,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 163 [2020-10-12 15:37:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:51,223 INFO L225 Difference]: With dead ends: 301 [2020-10-12 15:37:51,223 INFO L226 Difference]: Without dead ends: 299 [2020-10-12 15:37:51,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:37:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-12 15:37:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 233. [2020-10-12 15:37:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-12 15:37:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 239 transitions. [2020-10-12 15:37:51,256 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 239 transitions. Word has length 163 [2020-10-12 15:37:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:51,256 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 239 transitions. [2020-10-12 15:37:51,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 15:37:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 239 transitions. [2020-10-12 15:37:51,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 15:37:51,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:51,258 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] [2020-10-12 15:37:51,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 15:37:51,258 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]=== [2020-10-12 15:37:51,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:51,258 INFO L82 PathProgramCache]: Analyzing trace with hash 107048611, now seen corresponding path program 30 times [2020-10-12 15:37:51,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:51,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986196777] [2020-10-12 15:37:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:56,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 15:37:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:37:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-12 15:37:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 15:37:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-12 15:37:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:57,604 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-12 15:37:57,899 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-12 15:37:58,503 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-10-12 15:37:59,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:59,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:59,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:59,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:59,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:59,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:59,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:59,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 0 proven. 609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:59,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986196777] [2020-10-12 15:37:59,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:59,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 15:37:59,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897741085] [2020-10-12 15:37:59,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 15:37:59,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:59,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 15:37:59,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:37:59,644 INFO L87 Difference]: Start difference. First operand 233 states and 239 transitions. Second operand 25 states. [2020-10-12 15:38:00,946 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 15:38:02,370 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-10-12 15:38:02,708 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-12 15:38:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:05,119 INFO L93 Difference]: Finished difference Result 401 states and 410 transitions. [2020-10-12 15:38:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 15:38:05,120 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 164 [2020-10-12 15:38:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:05,122 INFO L225 Difference]: With dead ends: 401 [2020-10-12 15:38:05,123 INFO L226 Difference]: Without dead ends: 399 [2020-10-12 15:38:05,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 15:38:05,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-12 15:38:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 271. [2020-10-12 15:38:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-12 15:38:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 280 transitions. [2020-10-12 15:38:05,147 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 280 transitions. Word has length 164 [2020-10-12 15:38:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:05,148 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 280 transitions. [2020-10-12 15:38:05,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 15:38:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 280 transitions. [2020-10-12 15:38:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 15:38:05,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:05,149 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] [2020-10-12 15:38:05,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 15:38:05,149 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]=== [2020-10-12 15:38:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1225257804, now seen corresponding path program 31 times [2020-10-12 15:38:05,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:05,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151933341] [2020-10-12 15:38:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking...