/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:49:48,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:49:48,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:49:48,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:49:48,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:49:48,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:49:48,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:49:48,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:49:48,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:49:48,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:49:48,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:49:48,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:49:48,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:49:48,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:49:48,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:49:48,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:49:48,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:49:48,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:49:48,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:49:48,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:49:48,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:49:48,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:49:48,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:49:48,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:49:48,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:49:48,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:49:48,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:49:48,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:49:48,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:49:48,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:49:48,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:49:48,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:49:48,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:49:48,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:49:48,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:49:48,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:49:48,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:49:48,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:49:48,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:49:48,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:49:48,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:49:48,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:49:48,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:49:48,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:49:48,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:49:48,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:49:48,733 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:49:48,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:49:48,734 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:49:48,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:49:48,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:49:48,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:49:48,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:49:48,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:49:48,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:49:48,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:49:48,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:49:48,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:49:48,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:49:48,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:49:48,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:49:48,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:49:48,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:49:48,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:49:48,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:49:48,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:49:48,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:49:48,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:49:48,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:49:48,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:49:48,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:49:48,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:49:49,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:49:49,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:49:49,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:49:49,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:49:49,095 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:49:49,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets-1.i [2020-10-14 04:49:49,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ff719f21/8974c7f761b845f08a8de56982014799/FLAGeb91eee6b [2020-10-14 04:49:49,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:49:49,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-buckets-1.i [2020-10-14 04:49:49,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ff719f21/8974c7f761b845f08a8de56982014799/FLAGeb91eee6b [2020-10-14 04:49:50,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ff719f21/8974c7f761b845f08a8de56982014799 [2020-10-14 04:49:50,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:49:50,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:49:50,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:49:50,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:49:50,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:49:50,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e77f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50, skipping insertion in model container [2020-10-14 04:49:50,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:49:50,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:49:50,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:49:50,663 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:49:50,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:49:50,765 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:49:50,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50 WrapperNode [2020-10-14 04:49:50,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:49:50,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:49:50,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:49:50,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:49:50,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (1/1) ... [2020-10-14 04:49:50,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:49:50,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:49:50,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:49:50,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:49:50,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:49:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:49:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:49:50,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:49:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:49:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:49:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:49:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:49:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:49:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:49:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:49:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:49:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:49:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:49:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:49:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:49:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:49:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:49:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:49:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:49:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:49:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:49:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:49:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:49:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:49:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:49:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:49:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:49:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:49:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:49:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:49:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:49:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:49:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:49:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:49:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:49:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:49:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:49:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:49:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:49:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:49:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:49:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:49:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:49:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:49:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:49:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:49:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:49:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:49:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:49:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:49:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:49:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:49:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:49:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:49:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:49:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:49:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:49:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:49:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:49:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:49:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:49:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:49:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:49:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:49:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:49:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:49:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:49:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:49:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:49:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:49:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:49:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:49:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:49:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:49:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:49:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:49:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:49:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:49:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:49:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:49:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:49:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:49:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:49:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:49:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:49:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:49:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:49:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:49:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:49:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:49:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:49:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:49:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:49:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:49:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:49:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:49:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:49:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:49:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:49:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:49:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:49:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:49:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:49:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:49:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:49:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:49:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:49:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:49:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:49:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:49:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:49:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:49:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:49:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:49:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:49:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:49:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:49:51,603 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:49:51,604 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-14 04:49:51,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:51 BoogieIcfgContainer [2020-10-14 04:49:51,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:49:51,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:49:51,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:49:51,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:49:51,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:49:50" (1/3) ... [2020-10-14 04:49:51,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1d7416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:51, skipping insertion in model container [2020-10-14 04:49:51,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:50" (2/3) ... [2020-10-14 04:49:51,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1d7416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:51, skipping insertion in model container [2020-10-14 04:49:51,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:51" (3/3) ... [2020-10-14 04:49:51,618 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2020-10-14 04:49:51,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:49:51,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-14 04:49:51,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-14 04:49:51,672 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:49:51,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:49:51,672 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:49:51,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:49:51,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:49:51,673 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:49:51,673 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:49:51,673 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:49:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-14 04:49:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 04:49:51,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:51,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:51,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:51,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1953697339, now seen corresponding path program 1 times [2020-10-14 04:49:51,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:51,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891607] [2020-10-14 04:49:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:52,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:49:52,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:52,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-14 04:49:52,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:52,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:49:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:49:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:49:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:52,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:52,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:49:52,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:52,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:52,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891607] [2020-10-14 04:49:52,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:52,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:49:52,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679320016] [2020-10-14 04:49:52,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:49:52,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:52,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:49:52,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:49:52,452 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-14 04:49:52,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:52,696 INFO L93 Difference]: Finished difference Result 118 states and 194 transitions. [2020-10-14 04:49:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:49:52,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-14 04:49:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:52,709 INFO L225 Difference]: With dead ends: 118 [2020-10-14 04:49:52,710 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 04:49:52,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 04:49:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 45. [2020-10-14 04:49:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 04:49:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-14 04:49:52,761 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 12 [2020-10-14 04:49:52,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:52,761 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-14 04:49:52,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:49:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-14 04:49:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 04:49:52,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:52,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:52,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:49:52,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:52,764 INFO L82 PathProgramCache]: Analyzing trace with hash 471340906, now seen corresponding path program 1 times [2020-10-14 04:49:52,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:52,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120612175] [2020-10-14 04:49:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:52,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:53,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:53,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:49:53,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:53,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 04:49:53,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:53,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:49:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:49:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:49:53,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:53,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:53,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:49:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:53,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:53,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:53,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120612175] [2020-10-14 04:49:53,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:53,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:49:53,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023061672] [2020-10-14 04:49:53,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:49:53,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:53,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:49:53,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:53,105 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 4 states. [2020-10-14 04:49:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:53,398 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-14 04:49:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:49:53,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 04:49:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:53,404 INFO L225 Difference]: With dead ends: 49 [2020-10-14 04:49:53,405 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 04:49:53,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:53,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 04:49:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-14 04:49:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 04:49:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-14 04:49:53,423 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 13 [2020-10-14 04:49:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:53,424 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-14 04:49:53,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:49:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-14 04:49:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:49:53,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:53,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:53,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:49:53,428 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:53,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1726702173, now seen corresponding path program 1 times [2020-10-14 04:49:53,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:53,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650331333] [2020-10-14 04:49:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:53,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:53,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:49:53,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 04:49:53,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:53,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:49:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:49:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:53,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:53,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:53,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:53,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:53,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:53,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:53,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:53,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650331333] [2020-10-14 04:49:53,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:53,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:49:53,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305406572] [2020-10-14 04:49:53,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:49:53,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:53,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:49:53,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:53,746 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 6 states. [2020-10-14 04:49:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:54,029 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-10-14 04:49:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:49:54,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 04:49:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:54,032 INFO L225 Difference]: With dead ends: 65 [2020-10-14 04:49:54,032 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 04:49:54,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 04:49:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-14 04:49:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 04:49:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-14 04:49:54,042 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 14 [2020-10-14 04:49:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:54,042 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-14 04:49:54,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:49:54,042 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-14 04:49:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:49:54,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:54,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:54,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:49:54,044 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash 602561823, now seen corresponding path program 1 times [2020-10-14 04:49:54,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:54,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928533511] [2020-10-14 04:49:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:54,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:54,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:49:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:49:54,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:54,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:49:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:49:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:49:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:54,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:54,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:54,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:54,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:54,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928533511] [2020-10-14 04:49:54,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:54,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:49:54,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431850828] [2020-10-14 04:49:54,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:49:54,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:54,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:49:54,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:54,162 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 4 states. [2020-10-14 04:49:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:54,474 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-14 04:49:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:49:54,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 04:49:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:54,476 INFO L225 Difference]: With dead ends: 49 [2020-10-14 04:49:54,476 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 04:49:54,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 04:49:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-14 04:49:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 04:49:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-14 04:49:54,483 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 14 [2020-10-14 04:49:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:54,484 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-14 04:49:54,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:49:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-14 04:49:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 04:49:54,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:54,485 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:54,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:49:54,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:54,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:54,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2131101984, now seen corresponding path program 1 times [2020-10-14 04:49:54,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:54,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936154223] [2020-10-14 04:49:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:54,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 04:49:54,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 04:49:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:54,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:49:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:49:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:54,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:55,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:55,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:55,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:55,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:49:55,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:55,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:55,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:55,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936154223] [2020-10-14 04:49:55,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:55,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:49:55,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56419822] [2020-10-14 04:49:55,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:49:55,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:55,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:49:55,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:49:55,023 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 8 states. [2020-10-14 04:49:55,459 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-14 04:49:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:55,877 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-10-14 04:49:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:49:55,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-14 04:49:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:55,879 INFO L225 Difference]: With dead ends: 65 [2020-10-14 04:49:55,879 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 04:49:55,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:49:55,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 04:49:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-14 04:49:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 04:49:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-14 04:49:55,896 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 19 [2020-10-14 04:49:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:55,896 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-14 04:49:55,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:49:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-14 04:49:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:49:55,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:55,899 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:55,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:49:55,900 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1728098773, now seen corresponding path program 1 times [2020-10-14 04:49:55,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:55,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74398972] [2020-10-14 04:49:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:56,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:56,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:56,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:49:56,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:49:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-14 04:49:56,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:56,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:49:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:49:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:56,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:56,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:56,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:56,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:56,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:56,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74398972] [2020-10-14 04:49:56,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:56,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:49:56,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070677530] [2020-10-14 04:49:56,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:49:56,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:56,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:49:56,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:49:56,725 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 8 states. [2020-10-14 04:49:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:57,187 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2020-10-14 04:49:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:49:57,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-14 04:49:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:57,189 INFO L225 Difference]: With dead ends: 101 [2020-10-14 04:49:57,190 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 04:49:57,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:49:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 04:49:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 60. [2020-10-14 04:49:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 04:49:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-10-14 04:49:57,211 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 20 [2020-10-14 04:49:57,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:57,212 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-10-14 04:49:57,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:49:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-10-14 04:49:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:49:57,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:57,217 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:57,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:49:57,219 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:57,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:57,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1450874320, now seen corresponding path program 2 times [2020-10-14 04:49:57,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:57,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698020501] [2020-10-14 04:49:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:57,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:57,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:49:57,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:49:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-14 04:49:57,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:57,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:49:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:49:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:58,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:58,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:58,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:58,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:58,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:58,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:58,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698020501] [2020-10-14 04:49:58,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:58,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:49:58,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922464851] [2020-10-14 04:49:58,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:49:58,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:58,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:49:58,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:58,038 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 9 states. [2020-10-14 04:49:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:58,981 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-10-14 04:49:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:49:58,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-14 04:49:58,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:58,984 INFO L225 Difference]: With dead ends: 107 [2020-10-14 04:49:58,984 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 04:49:58,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:49:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 04:49:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2020-10-14 04:49:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 04:49:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-10-14 04:49:58,994 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 22 [2020-10-14 04:49:58,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:58,994 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-10-14 04:49:58,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:49:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-10-14 04:49:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:49:58,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:58,996 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:58,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:49:58,996 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash -127654851, now seen corresponding path program 2 times [2020-10-14 04:49:58,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:58,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690335125] [2020-10-14 04:49:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:59,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:59,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:49:59,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 04:49:59,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:59,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:49:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:49:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:59,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:59,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:59,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:59,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:59,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:59,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:59,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690335125] [2020-10-14 04:49:59,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:59,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:49:59,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100018624] [2020-10-14 04:49:59,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:49:59,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:59,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:49:59,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:49:59,632 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 10 states. [2020-10-14 04:50:00,101 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-14 04:50:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:00,526 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2020-10-14 04:50:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:00,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-14 04:50:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:00,527 INFO L225 Difference]: With dead ends: 82 [2020-10-14 04:50:00,528 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 04:50:00,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:00,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 04:50:00,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-14 04:50:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 04:50:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-10-14 04:50:00,536 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 24 [2020-10-14 04:50:00,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:00,536 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-10-14 04:50:00,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:00,537 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-10-14 04:50:00,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:50:00,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:00,538 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:00,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:50:00,538 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:00,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:00,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1572698059, now seen corresponding path program 3 times [2020-10-14 04:50:00,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:00,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327879869] [2020-10-14 04:50:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:00,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:00,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:50:00,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 04:50:00,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:00,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:50:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:50:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:00,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:00,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:00,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:00,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:00,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:00,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:50:00,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327879869] [2020-10-14 04:50:00,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:00,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:50:00,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287160898] [2020-10-14 04:50:00,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:50:00,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:00,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:50:00,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:50:00,890 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 8 states. [2020-10-14 04:50:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:01,388 INFO L93 Difference]: Finished difference Result 132 states and 161 transitions. [2020-10-14 04:50:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:01,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-14 04:50:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:01,390 INFO L225 Difference]: With dead ends: 132 [2020-10-14 04:50:01,390 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 04:50:01,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 04:50:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 74. [2020-10-14 04:50:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 04:50:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-10-14 04:50:01,399 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 24 [2020-10-14 04:50:01,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:01,399 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-14 04:50:01,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:50:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2020-10-14 04:50:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 04:50:01,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:01,401 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:01,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:50:01,401 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:01,402 INFO L82 PathProgramCache]: Analyzing trace with hash -314905825, now seen corresponding path program 1 times [2020-10-14 04:50:01,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:01,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136187699] [2020-10-14 04:50:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:01,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 04:50:01,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 04:50:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:01,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:50:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:01,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:01,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:01,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:01,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:01,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:01,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:50:01,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136187699] [2020-10-14 04:50:01,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:01,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:01,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786758979] [2020-10-14 04:50:01,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:01,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:01,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:01,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:01,846 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand 9 states. [2020-10-14 04:50:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:02,722 INFO L93 Difference]: Finished difference Result 169 states and 205 transitions. [2020-10-14 04:50:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:50:02,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-14 04:50:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:02,724 INFO L225 Difference]: With dead ends: 169 [2020-10-14 04:50:02,724 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 04:50:02,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 04:50:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 101. [2020-10-14 04:50:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 04:50:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2020-10-14 04:50:02,743 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 25 [2020-10-14 04:50:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:02,743 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-14 04:50:02,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2020-10-14 04:50:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 04:50:02,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:02,749 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:02,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:50:02,749 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:02,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1335974179, now seen corresponding path program 1 times [2020-10-14 04:50:02,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:02,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699764684] [2020-10-14 04:50:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:03,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:03,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 04:50:03,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:03,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 04:50:03,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:03,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:50:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:03,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:03,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:03,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:03,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:03,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699764684] [2020-10-14 04:50:03,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:03,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:03,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149408534] [2020-10-14 04:50:03,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:03,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:03,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:03,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:03,267 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 10 states. [2020-10-14 04:50:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:04,378 INFO L93 Difference]: Finished difference Result 169 states and 207 transitions. [2020-10-14 04:50:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:04,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-14 04:50:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:04,380 INFO L225 Difference]: With dead ends: 169 [2020-10-14 04:50:04,380 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 04:50:04,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 04:50:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 101. [2020-10-14 04:50:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 04:50:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2020-10-14 04:50:04,391 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 25 [2020-10-14 04:50:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:04,393 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-14 04:50:04,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2020-10-14 04:50:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:50:04,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:04,398 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] [2020-10-14 04:50:04,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:50:04,398 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:04,399 INFO L82 PathProgramCache]: Analyzing trace with hash -791238755, now seen corresponding path program 1 times [2020-10-14 04:50:04,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:04,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848113985] [2020-10-14 04:50:04,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:04,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:05,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:05,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:50:05,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-14 04:50:05,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:05,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:50:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:50:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:06,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:06,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:06,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:06,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:06,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:06,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:06,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848113985] [2020-10-14 04:50:06,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:06,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:06,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541690827] [2020-10-14 04:50:06,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:06,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:06,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:06,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:06,120 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 11 states. [2020-10-14 04:50:06,378 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-14 04:50:06,995 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-10-14 04:50:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:07,673 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2020-10-14 04:50:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:50:07,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-14 04:50:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:07,675 INFO L225 Difference]: With dead ends: 144 [2020-10-14 04:50:07,675 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 04:50:07,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 04:50:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-10-14 04:50:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 04:50:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2020-10-14 04:50:07,692 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 28 [2020-10-14 04:50:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:07,692 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2020-10-14 04:50:07,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2020-10-14 04:50:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 04:50:07,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:07,696 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:07,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:50:07,696 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:07,697 INFO L82 PathProgramCache]: Analyzing trace with hash -300190912, now seen corresponding path program 3 times [2020-10-14 04:50:07,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:07,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465841238] [2020-10-14 04:50:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:08,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:08,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:50:08,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 04:50:08,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:08,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:50:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:08,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:08,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:08,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:08,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:08,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:08,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:08,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465841238] [2020-10-14 04:50:08,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:08,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:08,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253792639] [2020-10-14 04:50:08,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:08,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:08,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:08,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:08,344 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand 9 states. [2020-10-14 04:50:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:08,950 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2020-10-14 04:50:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:50:08,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-14 04:50:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:08,951 INFO L225 Difference]: With dead ends: 132 [2020-10-14 04:50:08,952 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 04:50:08,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 04:50:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-14 04:50:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 04:50:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2020-10-14 04:50:08,965 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 29 [2020-10-14 04:50:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:08,965 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2020-10-14 04:50:08,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2020-10-14 04:50:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 04:50:08,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:08,966 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:08,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:50:08,966 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1370457479, now seen corresponding path program 1 times [2020-10-14 04:50:08,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:08,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728809061] [2020-10-14 04:50:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:09,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:09,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:50:09,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:50:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-14 04:50:09,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:09,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:50:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:50:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:09,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:09,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:09,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:09,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:09,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:09,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:09,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728809061] [2020-10-14 04:50:09,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:09,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:50:09,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784741638] [2020-10-14 04:50:09,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:50:09,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:50:09,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:50:09,672 INFO L87 Difference]: Start difference. First operand 104 states and 127 transitions. Second operand 8 states. [2020-10-14 04:50:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:10,199 INFO L93 Difference]: Finished difference Result 149 states and 183 transitions. [2020-10-14 04:50:10,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:10,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-14 04:50:10,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:10,203 INFO L225 Difference]: With dead ends: 149 [2020-10-14 04:50:10,203 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 04:50:10,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 04:50:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2020-10-14 04:50:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 04:50:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2020-10-14 04:50:10,219 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 29 [2020-10-14 04:50:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:10,219 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2020-10-14 04:50:10,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:50:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2020-10-14 04:50:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 04:50:10,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:10,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:10,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:50:10,220 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash 474973612, now seen corresponding path program 1 times [2020-10-14 04:50:10,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:10,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503600545] [2020-10-14 04:50:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:11,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:11,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:50:11,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-14 04:50:11,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:11,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:50:11,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:11,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:11,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:11,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:11,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:11,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:11,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:11,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503600545] [2020-10-14 04:50:11,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:11,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:11,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735252215] [2020-10-14 04:50:11,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:11,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:11,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:11,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:11,605 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand 10 states. [2020-10-14 04:50:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:12,525 INFO L93 Difference]: Finished difference Result 164 states and 199 transitions. [2020-10-14 04:50:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:12,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-14 04:50:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:12,530 INFO L225 Difference]: With dead ends: 164 [2020-10-14 04:50:12,531 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 04:50:12,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:50:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 04:50:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-10-14 04:50:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 04:50:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2020-10-14 04:50:12,543 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 31 [2020-10-14 04:50:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:12,544 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2020-10-14 04:50:12,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2020-10-14 04:50:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:12,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:12,545 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:50:12,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:50:12,545 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:12,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:12,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1225576881, now seen corresponding path program 1 times [2020-10-14 04:50:12,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:12,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386809607] [2020-10-14 04:50:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:12,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:13,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:13,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:13,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:13,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-14 04:50:13,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:13,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:50:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:14,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:14,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:14,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:14,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:14,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:14,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386809607] [2020-10-14 04:50:14,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:14,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:14,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073851270] [2020-10-14 04:50:14,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:14,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:14,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:14,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:14,024 INFO L87 Difference]: Start difference. First operand 125 states and 153 transitions. Second operand 12 states. [2020-10-14 04:50:14,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:14,973 INFO L93 Difference]: Finished difference Result 201 states and 248 transitions. [2020-10-14 04:50:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:14,974 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 04:50:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:14,975 INFO L225 Difference]: With dead ends: 201 [2020-10-14 04:50:14,975 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 04:50:14,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:50:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 04:50:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 145. [2020-10-14 04:50:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 04:50:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 181 transitions. [2020-10-14 04:50:14,989 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 181 transitions. Word has length 33 [2020-10-14 04:50:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:14,989 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 181 transitions. [2020-10-14 04:50:14,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 181 transitions. [2020-10-14 04:50:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:14,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:14,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:14,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:50:14,991 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:14,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1147925536, now seen corresponding path program 1 times [2020-10-14 04:50:14,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:14,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242200231] [2020-10-14 04:50:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:15,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:17,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:17,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:50:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2574 [2020-10-14 04:50:17,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:17,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:50:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:50:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:50:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:17,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:17,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:17,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:17,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:17,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:17,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:17,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:17,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242200231] [2020-10-14 04:50:17,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:17,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:50:17,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915730093] [2020-10-14 04:50:17,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:50:17,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:17,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:50:17,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:50:17,646 INFO L87 Difference]: Start difference. First operand 145 states and 181 transitions. Second operand 7 states. [2020-10-14 04:50:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:18,080 INFO L93 Difference]: Finished difference Result 182 states and 229 transitions. [2020-10-14 04:50:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:50:18,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-14 04:50:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:18,081 INFO L225 Difference]: With dead ends: 182 [2020-10-14 04:50:18,081 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 04:50:18,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 04:50:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2020-10-14 04:50:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 04:50:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 197 transitions. [2020-10-14 04:50:18,107 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 197 transitions. Word has length 33 [2020-10-14 04:50:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:18,108 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 197 transitions. [2020-10-14 04:50:18,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:50:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 197 transitions. [2020-10-14 04:50:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:50:18,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:18,111 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:50:18,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:50:18,111 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:18,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:18,112 INFO L82 PathProgramCache]: Analyzing trace with hash 842719644, now seen corresponding path program 1 times [2020-10-14 04:50:18,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:18,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097026884] [2020-10-14 04:50:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 04:50:18,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-14 04:50:18,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:50:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:18,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:18,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:18,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:18,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:18,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:18,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:50:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:18,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097026884] [2020-10-14 04:50:18,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:18,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:18,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131109014] [2020-10-14 04:50:18,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:18,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:18,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:18,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:18,994 INFO L87 Difference]: Start difference. First operand 158 states and 197 transitions. Second operand 9 states. [2020-10-14 04:50:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:20,073 INFO L93 Difference]: Finished difference Result 221 states and 284 transitions. [2020-10-14 04:50:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:50:20,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-14 04:50:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:20,076 INFO L225 Difference]: With dead ends: 221 [2020-10-14 04:50:20,076 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 04:50:20,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 04:50:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 179. [2020-10-14 04:50:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 04:50:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 225 transitions. [2020-10-14 04:50:20,092 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 225 transitions. Word has length 33 [2020-10-14 04:50:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:20,092 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 225 transitions. [2020-10-14 04:50:20,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 225 transitions. [2020-10-14 04:50:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:50:20,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:20,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:20,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:50:20,094 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:20,094 INFO L82 PathProgramCache]: Analyzing trace with hash 793753725, now seen corresponding path program 1 times [2020-10-14 04:50:20,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:20,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879509004] [2020-10-14 04:50:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:20,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:50:20,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-14 04:50:20,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:20,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:50:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:20,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:20,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:20,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:20,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:20,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:20,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879509004] [2020-10-14 04:50:20,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:20,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:20,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737154638] [2020-10-14 04:50:20,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:20,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:20,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:20,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:20,789 INFO L87 Difference]: Start difference. First operand 179 states and 225 transitions. Second operand 9 states. [2020-10-14 04:50:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:21,546 INFO L93 Difference]: Finished difference Result 235 states and 295 transitions. [2020-10-14 04:50:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:50:21,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 04:50:21,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:21,548 INFO L225 Difference]: With dead ends: 235 [2020-10-14 04:50:21,548 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 04:50:21,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:21,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 04:50:21,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-14 04:50:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 04:50:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 223 transitions. [2020-10-14 04:50:21,580 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 223 transitions. Word has length 34 [2020-10-14 04:50:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:21,580 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 223 transitions. [2020-10-14 04:50:21,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 223 transitions. [2020-10-14 04:50:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:50:21,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:21,581 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:21,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:50:21,582 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash -298736789, now seen corresponding path program 1 times [2020-10-14 04:50:21,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:21,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824036977] [2020-10-14 04:50:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:21,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:50:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:50:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-14 04:50:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:22,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:50:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:22,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:22,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:22,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:22,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:22,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:22,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:50:22,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824036977] [2020-10-14 04:50:22,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:22,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:22,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278950047] [2020-10-14 04:50:22,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:22,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:22,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:22,703 INFO L87 Difference]: Start difference. First operand 179 states and 223 transitions. Second operand 9 states. [2020-10-14 04:50:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:23,142 INFO L93 Difference]: Finished difference Result 225 states and 279 transitions. [2020-10-14 04:50:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:50:23,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 04:50:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:23,144 INFO L225 Difference]: With dead ends: 225 [2020-10-14 04:50:23,145 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 04:50:23,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 04:50:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 182. [2020-10-14 04:50:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 04:50:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 225 transitions. [2020-10-14 04:50:23,163 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 225 transitions. Word has length 34 [2020-10-14 04:50:23,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:23,164 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 225 transitions. [2020-10-14 04:50:23,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 225 transitions. [2020-10-14 04:50:23,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:50:23,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:23,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:23,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:50:23,165 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:23,166 INFO L82 PathProgramCache]: Analyzing trace with hash -930177231, now seen corresponding path program 1 times [2020-10-14 04:50:23,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:23,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460390367] [2020-10-14 04:50:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:24,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:24,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:50:24,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-14 04:50:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:24,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:50:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:24,805 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2020-10-14 04:50:24,946 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-14 04:50:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:25,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:25,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:25,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:25,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:25,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460390367] [2020-10-14 04:50:25,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:25,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:50:25,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045622792] [2020-10-14 04:50:25,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:50:25,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:25,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:50:25,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:25,428 INFO L87 Difference]: Start difference. First operand 182 states and 225 transitions. Second operand 15 states. [2020-10-14 04:50:25,953 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 92 [2020-10-14 04:50:26,219 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 88 [2020-10-14 04:50:26,817 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-14 04:50:27,188 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-14 04:50:27,652 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-10-14 04:50:27,991 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2020-10-14 04:50:28,385 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2020-10-14 04:50:28,584 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2020-10-14 04:50:29,129 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2020-10-14 04:50:29,646 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 100 [2020-10-14 04:50:30,190 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2020-10-14 04:50:30,640 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 94 [2020-10-14 04:50:31,087 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2020-10-14 04:50:31,432 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 99 [2020-10-14 04:50:31,687 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-14 04:50:31,919 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-14 04:50:32,174 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-14 04:50:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:32,176 INFO L93 Difference]: Finished difference Result 328 states and 401 transitions. [2020-10-14 04:50:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 04:50:32,177 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-14 04:50:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:32,179 INFO L225 Difference]: With dead ends: 328 [2020-10-14 04:50:32,179 INFO L226 Difference]: Without dead ends: 326 [2020-10-14 04:50:32,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=265, Invalid=1457, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 04:50:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-14 04:50:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 225. [2020-10-14 04:50:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-14 04:50:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 279 transitions. [2020-10-14 04:50:32,200 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 279 transitions. Word has length 36 [2020-10-14 04:50:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:32,200 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 279 transitions. [2020-10-14 04:50:32,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:50:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 279 transitions. [2020-10-14 04:50:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:50:32,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:32,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:32,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:50:32,202 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:32,202 INFO L82 PathProgramCache]: Analyzing trace with hash 993050803, now seen corresponding path program 1 times [2020-10-14 04:50:32,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:32,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943646765] [2020-10-14 04:50:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:32,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:32,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:50:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-14 04:50:32,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:32,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:50:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:50:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:32,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:32,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:32,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:50:32,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943646765] [2020-10-14 04:50:32,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:32,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:50:32,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359285372] [2020-10-14 04:50:32,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:50:32,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:32,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:50:32,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:50:32,995 INFO L87 Difference]: Start difference. First operand 225 states and 279 transitions. Second operand 9 states. [2020-10-14 04:50:33,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:33,724 INFO L93 Difference]: Finished difference Result 291 states and 362 transitions. [2020-10-14 04:50:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:50:33,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-14 04:50:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:33,728 INFO L225 Difference]: With dead ends: 291 [2020-10-14 04:50:33,728 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 04:50:33,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:33,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 04:50:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2020-10-14 04:50:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-14 04:50:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 274 transitions. [2020-10-14 04:50:33,746 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 274 transitions. Word has length 36 [2020-10-14 04:50:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:33,746 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 274 transitions. [2020-10-14 04:50:33,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:50:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 274 transitions. [2020-10-14 04:50:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:50:33,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:33,748 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:33,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:50:33,748 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:33,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1166726918, now seen corresponding path program 1 times [2020-10-14 04:50:33,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:33,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221553583] [2020-10-14 04:50:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:33,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:50:34,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 04:50:34,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:50:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:34,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:34,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:34,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:34,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:34,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:34,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221553583] [2020-10-14 04:50:34,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:34,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:34,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776497080] [2020-10-14 04:50:34,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:34,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:34,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:34,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:34,638 INFO L87 Difference]: Start difference. First operand 221 states and 274 transitions. Second operand 13 states. [2020-10-14 04:50:35,120 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-14 04:50:35,484 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-14 04:50:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:35,896 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2020-10-14 04:50:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:50:35,901 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 04:50:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:35,902 INFO L225 Difference]: With dead ends: 261 [2020-10-14 04:50:35,902 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 04:50:35,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:50:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 04:50:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 228. [2020-10-14 04:50:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-14 04:50:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 284 transitions. [2020-10-14 04:50:35,923 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 284 transitions. Word has length 36 [2020-10-14 04:50:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:35,924 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 284 transitions. [2020-10-14 04:50:35,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 284 transitions. [2020-10-14 04:50:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:50:35,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:35,925 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:35,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:50:35,925 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:35,926 INFO L82 PathProgramCache]: Analyzing trace with hash 678206224, now seen corresponding path program 2 times [2020-10-14 04:50:35,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:35,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638098669] [2020-10-14 04:50:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:37,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:37,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:50:37,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:50:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1793 [2020-10-14 04:50:37,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:37,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:50:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:38,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:38,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:38,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:38,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:38,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:38,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:38,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:38,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:38,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638098669] [2020-10-14 04:50:38,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:38,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:38,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531392369] [2020-10-14 04:50:38,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:38,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:38,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:38,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:38,040 INFO L87 Difference]: Start difference. First operand 228 states and 284 transitions. Second operand 13 states. [2020-10-14 04:50:39,453 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 04:50:39,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:39,761 INFO L93 Difference]: Finished difference Result 407 states and 517 transitions. [2020-10-14 04:50:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:50:39,762 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 04:50:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:39,764 INFO L225 Difference]: With dead ends: 407 [2020-10-14 04:50:39,764 INFO L226 Difference]: Without dead ends: 405 [2020-10-14 04:50:39,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:50:39,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-14 04:50:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 265. [2020-10-14 04:50:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-14 04:50:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 333 transitions. [2020-10-14 04:50:39,788 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 333 transitions. Word has length 36 [2020-10-14 04:50:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:39,789 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 333 transitions. [2020-10-14 04:50:39,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:39,789 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 333 transitions. [2020-10-14 04:50:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:50:39,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:39,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:39,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:50:39,791 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:39,791 INFO L82 PathProgramCache]: Analyzing trace with hash -255514639, now seen corresponding path program 1 times [2020-10-14 04:50:39,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:39,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547553756] [2020-10-14 04:50:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:41,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:41,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:50:41,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:50:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2118 [2020-10-14 04:50:41,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:41,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:50:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:50:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:42,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:42,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:42,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:42,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:42,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:42,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:42,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:42,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547553756] [2020-10-14 04:50:42,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:50:42,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 04:50:42,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280986714] [2020-10-14 04:50:42,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:42,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:42,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:42,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:42,125 INFO L87 Difference]: Start difference. First operand 265 states and 333 transitions. Second operand 10 states. [2020-10-14 04:50:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:42,629 INFO L93 Difference]: Finished difference Result 303 states and 382 transitions. [2020-10-14 04:50:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:50:42,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-14 04:50:42,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:42,631 INFO L225 Difference]: With dead ends: 303 [2020-10-14 04:50:42,631 INFO L226 Difference]: Without dead ends: 289 [2020-10-14 04:50:42,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-14 04:50:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 266. [2020-10-14 04:50:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 04:50:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 333 transitions. [2020-10-14 04:50:42,654 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 333 transitions. Word has length 36 [2020-10-14 04:50:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:42,654 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 333 transitions. [2020-10-14 04:50:42,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 333 transitions. [2020-10-14 04:50:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 04:50:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:42,655 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:42,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:50:42,656 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:42,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1754182150, now seen corresponding path program 1 times [2020-10-14 04:50:42,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:42,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450905661] [2020-10-14 04:50:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:43,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 04:50:43,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:50:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1219 [2020-10-14 04:50:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:43,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:50:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:44,252 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-14 04:50:44,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:44,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:44,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:44,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450905661] [2020-10-14 04:50:44,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:44,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:44,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862571150] [2020-10-14 04:50:44,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:44,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:44,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:44,513 INFO L87 Difference]: Start difference. First operand 266 states and 333 transitions. Second operand 13 states. [2020-10-14 04:50:44,923 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2020-10-14 04:50:45,552 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2020-10-14 04:50:45,869 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2020-10-14 04:50:46,177 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2020-10-14 04:50:46,463 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-10-14 04:50:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:47,077 INFO L93 Difference]: Finished difference Result 389 states and 489 transitions. [2020-10-14 04:50:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:50:47,078 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-14 04:50:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:47,080 INFO L225 Difference]: With dead ends: 389 [2020-10-14 04:50:47,080 INFO L226 Difference]: Without dead ends: 387 [2020-10-14 04:50:47,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:47,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-14 04:50:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 269. [2020-10-14 04:50:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-14 04:50:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 338 transitions. [2020-10-14 04:50:47,108 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 338 transitions. Word has length 37 [2020-10-14 04:50:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:47,109 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 338 transitions. [2020-10-14 04:50:47,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 338 transitions. [2020-10-14 04:50:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:50:47,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:47,110 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:47,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 04:50:47,110 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:47,112 INFO L82 PathProgramCache]: Analyzing trace with hash 538567790, now seen corresponding path program 2 times [2020-10-14 04:50:47,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:47,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980022280] [2020-10-14 04:50:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:49,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:49,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:50:49,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:49,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1883 [2020-10-14 04:50:49,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:49,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:49,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:50:49,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:49,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:50:49,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:49,830 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-10-14 04:50:50,408 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-14 04:50:50,978 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-14 04:50:51,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:51,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:51,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:51,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:51,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:51,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:51,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:50:51,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980022280] [2020-10-14 04:50:51,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:51,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:51,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744772470] [2020-10-14 04:50:51,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:51,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:51,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:51,274 INFO L87 Difference]: Start difference. First operand 269 states and 338 transitions. Second operand 14 states. [2020-10-14 04:50:51,855 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 61 [2020-10-14 04:50:52,465 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2020-10-14 04:50:52,734 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2020-10-14 04:50:53,129 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2020-10-14 04:50:53,345 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2020-10-14 04:50:53,622 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2020-10-14 04:50:53,816 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2020-10-14 04:50:53,996 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2020-10-14 04:50:54,451 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2020-10-14 04:50:54,704 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-10-14 04:50:54,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:54,996 INFO L93 Difference]: Finished difference Result 298 states and 370 transitions. [2020-10-14 04:50:54,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:50:54,996 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-14 04:50:54,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:54,998 INFO L225 Difference]: With dead ends: 298 [2020-10-14 04:50:54,998 INFO L226 Difference]: Without dead ends: 287 [2020-10-14 04:50:54,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:50:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-14 04:50:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2020-10-14 04:50:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-14 04:50:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 354 transitions. [2020-10-14 04:50:55,027 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 354 transitions. Word has length 38 [2020-10-14 04:50:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:55,027 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 354 transitions. [2020-10-14 04:50:55,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:50:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 354 transitions. [2020-10-14 04:50:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:50:55,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:55,028 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:55,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 04:50:55,029 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:55,029 INFO L82 PathProgramCache]: Analyzing trace with hash -416074891, now seen corresponding path program 1 times [2020-10-14 04:50:55,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:55,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487675378] [2020-10-14 04:50:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:55,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:55,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:50:55,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:55,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 04:50:55,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:55,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:55,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:55,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:50:55,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:55,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:55,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:55,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:55,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:50:55,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487675378] [2020-10-14 04:50:55,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:55,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:55,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563757932] [2020-10-14 04:50:55,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:55,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:55,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:55,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:55,504 INFO L87 Difference]: Start difference. First operand 284 states and 354 transitions. Second operand 10 states. [2020-10-14 04:50:56,108 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-14 04:50:56,266 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-14 04:50:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:56,689 INFO L93 Difference]: Finished difference Result 348 states and 433 transitions. [2020-10-14 04:50:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:50:56,689 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-14 04:50:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:56,691 INFO L225 Difference]: With dead ends: 348 [2020-10-14 04:50:56,691 INFO L226 Difference]: Without dead ends: 269 [2020-10-14 04:50:56,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:56,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-14 04:50:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2020-10-14 04:50:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-14 04:50:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 332 transitions. [2020-10-14 04:50:56,717 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 332 transitions. Word has length 38 [2020-10-14 04:50:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:56,718 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 332 transitions. [2020-10-14 04:50:56,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 332 transitions. [2020-10-14 04:50:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:50:56,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:56,719 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:56,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 04:50:56,719 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:56,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1077396107, now seen corresponding path program 3 times [2020-10-14 04:50:56,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:56,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636513257] [2020-10-14 04:50:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:57,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:57,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:50:57,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 04:50:57,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:57,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:50:57,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:57,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:57,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:57,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:50:57,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636513257] [2020-10-14 04:50:57,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:57,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:57,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618788213] [2020-10-14 04:50:57,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:57,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:57,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:57,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:57,446 INFO L87 Difference]: Start difference. First operand 269 states and 332 transitions. Second operand 11 states. [2020-10-14 04:50:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:58,627 INFO L93 Difference]: Finished difference Result 415 states and 517 transitions. [2020-10-14 04:50:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:58,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-14 04:50:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:58,630 INFO L225 Difference]: With dead ends: 415 [2020-10-14 04:50:58,630 INFO L226 Difference]: Without dead ends: 338 [2020-10-14 04:50:58,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-14 04:50:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 291. [2020-10-14 04:50:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-14 04:50:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 359 transitions. [2020-10-14 04:50:58,661 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 359 transitions. Word has length 38 [2020-10-14 04:50:58,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:58,661 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 359 transitions. [2020-10-14 04:50:58,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:58,662 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 359 transitions. [2020-10-14 04:50:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:50:58,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:58,663 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:58,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 04:50:58,663 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:58,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:58,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2140414497, now seen corresponding path program 2 times [2020-10-14 04:50:58,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:58,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647724654] [2020-10-14 04:50:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:58,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:58,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:50:58,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 04:50:58,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:58,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:50:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:59,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:59,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:59,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:59,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:59,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:59,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:59,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:59,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:50:59,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647724654] [2020-10-14 04:50:59,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:59,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:59,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795222725] [2020-10-14 04:50:59,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:59,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:59,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:59,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:59,259 INFO L87 Difference]: Start difference. First operand 291 states and 359 transitions. Second operand 12 states. [2020-10-14 04:51:00,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:00,695 INFO L93 Difference]: Finished difference Result 487 states and 610 transitions. [2020-10-14 04:51:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:51:00,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-14 04:51:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:00,704 INFO L225 Difference]: With dead ends: 487 [2020-10-14 04:51:00,704 INFO L226 Difference]: Without dead ends: 410 [2020-10-14 04:51:00,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:51:00,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-14 04:51:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 335. [2020-10-14 04:51:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-14 04:51:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 412 transitions. [2020-10-14 04:51:00,741 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 412 transitions. Word has length 39 [2020-10-14 04:51:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:00,742 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 412 transitions. [2020-10-14 04:51:00,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:51:00,742 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 412 transitions. [2020-10-14 04:51:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:51:00,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:00,743 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:00,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 04:51:00,744 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:00,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:00,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1133484445, now seen corresponding path program 1 times [2020-10-14 04:51:00,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:00,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721281528] [2020-10-14 04:51:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:01,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:01,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:51:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:01,422 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-14 04:51:01,620 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2020-10-14 04:51:01,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:01,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:01,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:01,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:01,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:01,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:01,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721281528] [2020-10-14 04:51:01,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:01,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:51:01,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566137179] [2020-10-14 04:51:01,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:51:01,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:01,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:51:01,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:51:01,915 INFO L87 Difference]: Start difference. First operand 335 states and 412 transitions. Second operand 14 states. [2020-10-14 04:51:02,593 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-10-14 04:51:02,806 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2020-10-14 04:51:03,008 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-14 04:51:03,168 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-14 04:51:03,321 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-14 04:51:03,701 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2020-10-14 04:51:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:04,231 INFO L93 Difference]: Finished difference Result 462 states and 574 transitions. [2020-10-14 04:51:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:51:04,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-14 04:51:04,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:04,234 INFO L225 Difference]: With dead ends: 462 [2020-10-14 04:51:04,234 INFO L226 Difference]: Without dead ends: 385 [2020-10-14 04:51:04,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:51:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-14 04:51:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 339. [2020-10-14 04:51:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-14 04:51:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 417 transitions. [2020-10-14 04:51:04,267 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 417 transitions. Word has length 39 [2020-10-14 04:51:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:04,267 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 417 transitions. [2020-10-14 04:51:04,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 417 transitions. [2020-10-14 04:51:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:51:04,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:04,268 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 04:51:04,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 04:51:04,269 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:04,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1470364043, now seen corresponding path program 1 times [2020-10-14 04:51:04,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:04,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527358236] [2020-10-14 04:51:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2316 [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:51:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:06,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:06,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:06,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:06,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:06,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:06,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:51:06,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527358236] [2020-10-14 04:51:06,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:51:06,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:51:06,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827884388] [2020-10-14 04:51:06,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:51:06,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:06,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:51:06,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:51:06,698 INFO L87 Difference]: Start difference. First operand 339 states and 417 transitions. Second operand 8 states. [2020-10-14 04:51:07,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:07,005 INFO L93 Difference]: Finished difference Result 389 states and 479 transitions. [2020-10-14 04:51:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:51:07,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-10-14 04:51:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:07,007 INFO L225 Difference]: With dead ends: 389 [2020-10-14 04:51:07,007 INFO L226 Difference]: Without dead ends: 312 [2020-10-14 04:51:07,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:51:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-14 04:51:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-10-14 04:51:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-14 04:51:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 383 transitions. [2020-10-14 04:51:07,036 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 383 transitions. Word has length 40 [2020-10-14 04:51:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:07,037 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 383 transitions. [2020-10-14 04:51:07,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:51:07,037 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 383 transitions. [2020-10-14 04:51:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:51:07,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:07,038 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:07,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 04:51:07,038 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:07,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2009837772, now seen corresponding path program 2 times [2020-10-14 04:51:07,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:07,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685720636] [2020-10-14 04:51:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:10,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:12,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 04:51:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-14 04:51:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 04:51:12,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:12,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:51:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:51:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:12,597 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-14 04:51:13,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:13,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:13,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:13,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:13,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:13,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:13,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685720636] [2020-10-14 04:51:13,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:13,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:13,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527774628] [2020-10-14 04:51:13,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:13,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:13,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:13,121 INFO L87 Difference]: Start difference. First operand 312 states and 383 transitions. Second operand 15 states. [2020-10-14 04:51:13,414 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-14 04:51:13,564 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-14 04:51:13,844 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-10-14 04:51:14,052 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-14 04:51:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:15,285 INFO L93 Difference]: Finished difference Result 442 states and 542 transitions. [2020-10-14 04:51:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:51:15,285 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 04:51:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:15,287 INFO L225 Difference]: With dead ends: 442 [2020-10-14 04:51:15,287 INFO L226 Difference]: Without dead ends: 431 [2020-10-14 04:51:15,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:51:15,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-14 04:51:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 361. [2020-10-14 04:51:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-14 04:51:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 444 transitions. [2020-10-14 04:51:15,318 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 444 transitions. Word has length 41 [2020-10-14 04:51:15,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:15,318 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 444 transitions. [2020-10-14 04:51:15,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:15,319 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 444 transitions. [2020-10-14 04:51:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:51:15,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:15,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:15,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 04:51:15,320 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:15,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:15,321 INFO L82 PathProgramCache]: Analyzing trace with hash -294484344, now seen corresponding path program 1 times [2020-10-14 04:51:15,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:15,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835892881] [2020-10-14 04:51:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:15,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:16,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:16,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 04:51:16,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:16,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-14 04:51:16,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:16,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:16,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:16,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:16,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:51:16,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:16,865 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-14 04:51:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:17,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:17,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:17,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:17,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:17,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:17,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835892881] [2020-10-14 04:51:17,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:17,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:17,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69176685] [2020-10-14 04:51:17,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:17,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:17,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:17,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:17,276 INFO L87 Difference]: Start difference. First operand 361 states and 444 transitions. Second operand 13 states. [2020-10-14 04:51:18,376 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-14 04:51:18,772 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-14 04:51:19,075 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2020-10-14 04:51:19,290 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-14 04:51:19,532 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-14 04:51:20,188 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2020-10-14 04:51:20,637 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-10-14 04:51:20,984 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-14 04:51:21,263 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-14 04:51:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:21,272 INFO L93 Difference]: Finished difference Result 596 states and 734 transitions. [2020-10-14 04:51:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:51:21,273 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 04:51:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:21,275 INFO L225 Difference]: With dead ends: 596 [2020-10-14 04:51:21,276 INFO L226 Difference]: Without dead ends: 554 [2020-10-14 04:51:21,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:51:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-10-14 04:51:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 441. [2020-10-14 04:51:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 04:51:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 546 transitions. [2020-10-14 04:51:21,319 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 546 transitions. Word has length 41 [2020-10-14 04:51:21,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:21,320 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 546 transitions. [2020-10-14 04:51:21,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:21,320 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 546 transitions. [2020-10-14 04:51:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:51:21,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:21,321 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:21,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 04:51:21,321 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:21,322 INFO L82 PathProgramCache]: Analyzing trace with hash 564794564, now seen corresponding path program 3 times [2020-10-14 04:51:21,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:21,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118271872] [2020-10-14 04:51:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:21,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:21,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 04:51:21,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-14 04:51:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:21,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:51:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:51:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:22,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:22,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:22,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:51:22,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118271872] [2020-10-14 04:51:22,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:22,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:22,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118910779] [2020-10-14 04:51:22,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:22,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:22,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:22,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:22,041 INFO L87 Difference]: Start difference. First operand 441 states and 546 transitions. Second operand 13 states. [2020-10-14 04:51:22,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:22,975 INFO L93 Difference]: Finished difference Result 886 states and 1111 transitions. [2020-10-14 04:51:22,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:51:22,976 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 04:51:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:22,979 INFO L225 Difference]: With dead ends: 886 [2020-10-14 04:51:22,979 INFO L226 Difference]: Without dead ends: 695 [2020-10-14 04:51:22,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:51:22,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-14 04:51:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 606. [2020-10-14 04:51:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-14 04:51:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 750 transitions. [2020-10-14 04:51:23,041 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 750 transitions. Word has length 41 [2020-10-14 04:51:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:23,042 INFO L479 AbstractCegarLoop]: Abstraction has 606 states and 750 transitions. [2020-10-14 04:51:23,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 750 transitions. [2020-10-14 04:51:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:51:23,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:23,043 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:23,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 04:51:23,043 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:23,044 INFO L82 PathProgramCache]: Analyzing trace with hash 501787694, now seen corresponding path program 1 times [2020-10-14 04:51:23,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:23,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858718117] [2020-10-14 04:51:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:24,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:24,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:51:24,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:24,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-10-14 04:51:24,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:24,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:24,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:51:24,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:24,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:51:24,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:24,445 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-14 04:51:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:24,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:24,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:24,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:24,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:24,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:24,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858718117] [2020-10-14 04:51:24,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:24,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:24,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812173449] [2020-10-14 04:51:24,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:24,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:24,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:24,845 INFO L87 Difference]: Start difference. First operand 606 states and 750 transitions. Second operand 15 states. [2020-10-14 04:51:25,742 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2020-10-14 04:51:25,940 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-14 04:51:26,133 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-10-14 04:51:26,622 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-14 04:51:27,327 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-14 04:51:27,806 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-14 04:51:28,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:28,145 INFO L93 Difference]: Finished difference Result 773 states and 961 transitions. [2020-10-14 04:51:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:51:28,146 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-14 04:51:28,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:28,149 INFO L225 Difference]: With dead ends: 773 [2020-10-14 04:51:28,150 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 04:51:28,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2020-10-14 04:51:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 04:51:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 615. [2020-10-14 04:51:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-10-14 04:51:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 761 transitions. [2020-10-14 04:51:28,207 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 761 transitions. Word has length 42 [2020-10-14 04:51:28,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:28,207 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 761 transitions. [2020-10-14 04:51:28,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:28,207 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 761 transitions. [2020-10-14 04:51:28,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:51:28,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:28,208 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:28,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 04:51:28,209 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:28,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1644184355, now seen corresponding path program 2 times [2020-10-14 04:51:28,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:28,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577304719] [2020-10-14 04:51:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:28,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:29,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:29,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:51:29,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:51:29,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-14 04:51:29,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:29,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:51:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:30,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:30,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:30,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:30,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:30,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:30,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:30,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:51:30,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577304719] [2020-10-14 04:51:30,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:30,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:51:30,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681816139] [2020-10-14 04:51:30,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:51:30,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:30,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:51:30,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:51:30,140 INFO L87 Difference]: Start difference. First operand 615 states and 761 transitions. Second operand 13 states. [2020-10-14 04:51:31,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:31,114 INFO L93 Difference]: Finished difference Result 731 states and 912 transitions. [2020-10-14 04:51:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:51:31,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 04:51:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:31,117 INFO L225 Difference]: With dead ends: 731 [2020-10-14 04:51:31,117 INFO L226 Difference]: Without dead ends: 729 [2020-10-14 04:51:31,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:51:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-14 04:51:31,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 624. [2020-10-14 04:51:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-10-14 04:51:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 769 transitions. [2020-10-14 04:51:31,170 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 769 transitions. Word has length 42 [2020-10-14 04:51:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:31,170 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 769 transitions. [2020-10-14 04:51:31,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:51:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 769 transitions. [2020-10-14 04:51:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 04:51:31,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:31,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:31,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 04:51:31,172 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:31,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1167796655, now seen corresponding path program 3 times [2020-10-14 04:51:31,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:31,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215380005] [2020-10-14 04:51:31,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:33,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:33,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 04:51:33,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2060 [2020-10-14 04:51:33,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:33,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:51:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:33,496 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-14 04:51:33,649 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-14 04:51:33,772 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-14 04:51:34,312 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 101 [2020-10-14 04:51:34,491 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-14 04:51:34,678 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-14 04:51:34,808 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-14 04:51:34,993 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-10-14 04:51:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:35,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:35,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:35,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:35,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:35,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:35,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:35,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:35,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:51:35,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215380005] [2020-10-14 04:51:35,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:35,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:51:35,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13976875] [2020-10-14 04:51:35,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:51:35,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:35,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:51:35,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:35,455 INFO L87 Difference]: Start difference. First operand 624 states and 769 transitions. Second operand 16 states. [2020-10-14 04:51:36,161 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 107 [2020-10-14 04:51:36,447 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2020-10-14 04:51:36,633 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-14 04:51:36,856 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-14 04:51:37,781 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 162 [2020-10-14 04:51:38,425 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 142 [2020-10-14 04:51:38,938 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 105 [2020-10-14 04:51:39,348 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2020-10-14 04:51:39,778 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 89 [2020-10-14 04:51:40,288 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 138 [2020-10-14 04:51:41,091 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 126 [2020-10-14 04:51:41,730 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2020-10-14 04:51:42,048 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2020-10-14 04:51:42,367 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2020-10-14 04:51:42,595 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-14 04:51:42,792 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-14 04:51:43,027 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-10-14 04:51:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:43,608 INFO L93 Difference]: Finished difference Result 649 states and 797 transitions. [2020-10-14 04:51:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 04:51:43,609 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-14 04:51:43,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:43,611 INFO L225 Difference]: With dead ends: 649 [2020-10-14 04:51:43,611 INFO L226 Difference]: Without dead ends: 647 [2020-10-14 04:51:43,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 04:51:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-14 04:51:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 636. [2020-10-14 04:51:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-14 04:51:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 782 transitions. [2020-10-14 04:51:43,666 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 782 transitions. Word has length 43 [2020-10-14 04:51:43,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:43,667 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 782 transitions. [2020-10-14 04:51:43,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:51:43,667 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 782 transitions. [2020-10-14 04:51:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 04:51:43,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:43,668 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:43,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 04:51:43,669 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:43,669 INFO L82 PathProgramCache]: Analyzing trace with hash -277246553, now seen corresponding path program 2 times [2020-10-14 04:51:43,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:43,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870787773] [2020-10-14 04:51:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 04:51:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 04:51:44,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:44,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:51:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:51:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:44,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:44,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:44,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:44,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:44,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:44,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:44,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:44,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:51:44,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870787773] [2020-10-14 04:51:44,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:44,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:51:44,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290625204] [2020-10-14 04:51:44,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:51:44,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:44,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:51:44,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:51:44,369 INFO L87 Difference]: Start difference. First operand 636 states and 782 transitions. Second operand 14 states. [2020-10-14 04:51:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:45,793 INFO L93 Difference]: Finished difference Result 849 states and 1051 transitions. [2020-10-14 04:51:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:51:45,794 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-14 04:51:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:45,796 INFO L225 Difference]: With dead ends: 849 [2020-10-14 04:51:45,796 INFO L226 Difference]: Without dead ends: 743 [2020-10-14 04:51:45,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:51:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-10-14 04:51:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 670. [2020-10-14 04:51:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2020-10-14 04:51:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 825 transitions. [2020-10-14 04:51:45,847 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 825 transitions. Word has length 43 [2020-10-14 04:51:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:45,848 INFO L479 AbstractCegarLoop]: Abstraction has 670 states and 825 transitions. [2020-10-14 04:51:45,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:51:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 825 transitions. [2020-10-14 04:51:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:51:45,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:45,849 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:45,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 04:51:45,850 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:45,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:45,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1189385197, now seen corresponding path program 2 times [2020-10-14 04:51:45,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:45,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361433621] [2020-10-14 04:51:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:46,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:51:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-14 04:51:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:46,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:51:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:51:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:47,082 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-14 04:51:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:47,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:47,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:47,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:47,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:47,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:47,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:51:47,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361433621] [2020-10-14 04:51:47,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:47,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:47,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269302549] [2020-10-14 04:51:47,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:47,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:47,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:47,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:47,433 INFO L87 Difference]: Start difference. First operand 670 states and 825 transitions. Second operand 15 states. [2020-10-14 04:51:47,936 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 51 [2020-10-14 04:51:48,146 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2020-10-14 04:51:48,438 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 50 [2020-10-14 04:51:48,612 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2020-10-14 04:51:48,841 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-10-14 04:51:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:49,671 INFO L93 Difference]: Finished difference Result 978 states and 1215 transitions. [2020-10-14 04:51:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:51:49,672 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 04:51:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:49,675 INFO L225 Difference]: With dead ends: 978 [2020-10-14 04:51:49,675 INFO L226 Difference]: Without dead ends: 840 [2020-10-14 04:51:49,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:51:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-10-14 04:51:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 704. [2020-10-14 04:51:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-14 04:51:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 869 transitions. [2020-10-14 04:51:49,730 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 869 transitions. Word has length 44 [2020-10-14 04:51:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:49,730 INFO L479 AbstractCegarLoop]: Abstraction has 704 states and 869 transitions. [2020-10-14 04:51:49,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 869 transitions. [2020-10-14 04:51:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:51:49,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:49,732 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:49,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 04:51:49,732 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:49,733 INFO L82 PathProgramCache]: Analyzing trace with hash 168316843, now seen corresponding path program 1 times [2020-10-14 04:51:49,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:49,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005538674] [2020-10-14 04:51:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:50,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:50,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:51:50,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-10-14 04:51:50,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:50,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:51:50,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:51,023 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 57 [2020-10-14 04:51:51,149 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-14 04:51:51,295 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-10-14 04:51:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:51,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:51,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:51,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:51:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:51,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005538674] [2020-10-14 04:51:51,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:51,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:51:51,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910402552] [2020-10-14 04:51:51,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:51:51,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:51,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:51:51,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:51:51,739 INFO L87 Difference]: Start difference. First operand 704 states and 869 transitions. Second operand 15 states. [2020-10-14 04:51:52,118 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-14 04:51:52,306 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-10-14 04:51:52,555 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2020-10-14 04:51:52,703 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-10-14 04:51:52,871 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-14 04:51:53,100 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-14 04:51:53,261 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-14 04:51:53,542 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2020-10-14 04:51:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:55,554 INFO L93 Difference]: Finished difference Result 1362 states and 1690 transitions. [2020-10-14 04:51:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:55,555 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 04:51:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:55,559 INFO L225 Difference]: With dead ends: 1362 [2020-10-14 04:51:55,559 INFO L226 Difference]: Without dead ends: 1278 [2020-10-14 04:51:55,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:51:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-10-14 04:51:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 885. [2020-10-14 04:51:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-14 04:51:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1103 transitions. [2020-10-14 04:51:55,644 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1103 transitions. Word has length 44 [2020-10-14 04:51:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:55,644 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1103 transitions. [2020-10-14 04:51:55,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:51:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1103 transitions. [2020-10-14 04:51:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:51:55,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:55,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2020-10-14 04:51:55,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 04:51:55,647 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash -600872852, now seen corresponding path program 1 times [2020-10-14 04:51:55,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:55,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831993707] [2020-10-14 04:51:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:56,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:56,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:51:56,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-14 04:51:56,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:56,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:51:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:51:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:56,631 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-10-14 04:51:56,768 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-10-14 04:51:56,883 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-14 04:51:57,088 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-14 04:51:57,428 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2020-10-14 04:51:57,578 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-14 04:51:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:57,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:57,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:57,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:57,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:57,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:57,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:57,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831993707] [2020-10-14 04:51:57,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:57,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:51:57,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751303067] [2020-10-14 04:51:57,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:51:57,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:51:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:51:57,916 INFO L87 Difference]: Start difference. First operand 885 states and 1103 transitions. Second operand 16 states. [2020-10-14 04:51:58,511 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2020-10-14 04:51:58,699 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2020-10-14 04:51:58,837 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-10-14 04:51:59,195 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2020-10-14 04:51:59,368 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-10-14 04:51:59,812 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-14 04:52:00,065 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-14 04:52:00,324 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-14 04:52:00,969 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2020-10-14 04:52:01,778 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-14 04:52:02,542 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-14 04:52:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:02,901 INFO L93 Difference]: Finished difference Result 1276 states and 1586 transitions. [2020-10-14 04:52:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 04:52:02,902 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-14 04:52:02,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:02,906 INFO L225 Difference]: With dead ends: 1276 [2020-10-14 04:52:02,906 INFO L226 Difference]: Without dead ends: 1274 [2020-10-14 04:52:02,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 04:52:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2020-10-14 04:52:02,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 976. [2020-10-14 04:52:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-10-14 04:52:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1223 transitions. [2020-10-14 04:52:03,016 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1223 transitions. Word has length 45 [2020-10-14 04:52:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:03,016 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1223 transitions. [2020-10-14 04:52:03,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:52:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1223 transitions. [2020-10-14 04:52:03,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:52:03,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:03,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2020-10-14 04:52:03,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 04:52:03,023 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:03,025 INFO L82 PathProgramCache]: Analyzing trace with hash -382018134, now seen corresponding path program 1 times [2020-10-14 04:52:03,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:03,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301519386] [2020-10-14 04:52:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:05,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:05,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:52:05,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:52:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-10-14 04:52:05,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:05,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:52:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:52:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:05,843 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-14 04:52:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:06,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:06,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:06,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:06,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:06,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:06,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301519386] [2020-10-14 04:52:06,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:06,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:52:06,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469721330] [2020-10-14 04:52:06,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:52:06,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:06,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:52:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:52:06,350 INFO L87 Difference]: Start difference. First operand 976 states and 1223 transitions. Second operand 16 states. [2020-10-14 04:52:06,732 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2020-10-14 04:52:06,904 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-14 04:52:07,358 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2020-10-14 04:52:07,493 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2020-10-14 04:52:07,923 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-14 04:52:08,172 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-10-14 04:52:08,510 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2020-10-14 04:52:08,759 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 04:52:08,983 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-14 04:52:09,287 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-14 04:52:09,629 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 04:52:09,883 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-14 04:52:10,078 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-14 04:52:10,621 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-14 04:52:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:11,093 INFO L93 Difference]: Finished difference Result 1374 states and 1712 transitions. [2020-10-14 04:52:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 04:52:11,093 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-14 04:52:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:11,099 INFO L225 Difference]: With dead ends: 1374 [2020-10-14 04:52:11,099 INFO L226 Difference]: Without dead ends: 1372 [2020-10-14 04:52:11,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:52:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2020-10-14 04:52:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1038. [2020-10-14 04:52:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-10-14 04:52:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1307 transitions. [2020-10-14 04:52:11,189 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1307 transitions. Word has length 45 [2020-10-14 04:52:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:11,190 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1307 transitions. [2020-10-14 04:52:11,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:52:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1307 transitions. [2020-10-14 04:52:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:52:11,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:11,192 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-10-14 04:52:11,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 04:52:11,192 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:11,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:11,192 INFO L82 PathProgramCache]: Analyzing trace with hash 683042732, now seen corresponding path program 1 times [2020-10-14 04:52:11,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:11,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292388573] [2020-10-14 04:52:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:12,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:12,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:52:12,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-14 04:52:12,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:12,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:52:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:52:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:12,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:12,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:12,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:12,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:12,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:12,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:12,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292388573] [2020-10-14 04:52:12,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:12,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:52:12,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779943453] [2020-10-14 04:52:12,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:52:12,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:12,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:52:12,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:52:12,924 INFO L87 Difference]: Start difference. First operand 1038 states and 1307 transitions. Second operand 18 states. [2020-10-14 04:52:13,707 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-14 04:52:14,796 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2020-10-14 04:52:14,937 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-14 04:52:15,251 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2020-10-14 04:52:15,879 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-10-14 04:52:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:16,318 INFO L93 Difference]: Finished difference Result 1669 states and 2090 transitions. [2020-10-14 04:52:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 04:52:16,318 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-14 04:52:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:16,323 INFO L225 Difference]: With dead ends: 1669 [2020-10-14 04:52:16,323 INFO L226 Difference]: Without dead ends: 1667 [2020-10-14 04:52:16,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 04:52:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-10-14 04:52:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1380. [2020-10-14 04:52:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1380 states. [2020-10-14 04:52:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1726 transitions. [2020-10-14 04:52:16,421 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1726 transitions. Word has length 45 [2020-10-14 04:52:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:16,421 INFO L479 AbstractCegarLoop]: Abstraction has 1380 states and 1726 transitions. [2020-10-14 04:52:16,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:52:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1726 transitions. [2020-10-14 04:52:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:52:16,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:16,423 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:16,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 04:52:16,423 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:16,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:16,424 INFO L82 PathProgramCache]: Analyzing trace with hash -779065327, now seen corresponding path program 3 times [2020-10-14 04:52:16,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:16,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323628961] [2020-10-14 04:52:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:16,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:18,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:21,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:21,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:52:21,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-14 04:52:21,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:52:21,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:21,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:52:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:52:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:52:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:21,782 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2020-10-14 04:52:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:22,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:22,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:22,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:22,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:52:22,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323628961] [2020-10-14 04:52:22,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:22,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:52:22,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692571642] [2020-10-14 04:52:22,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:52:22,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:22,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:52:22,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:52:22,242 INFO L87 Difference]: Start difference. First operand 1380 states and 1726 transitions. Second operand 14 states. [2020-10-14 04:52:22,928 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-14 04:52:23,233 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-14 04:52:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:23,786 INFO L93 Difference]: Finished difference Result 1460 states and 1825 transitions. [2020-10-14 04:52:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:52:23,787 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-14 04:52:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:23,791 INFO L225 Difference]: With dead ends: 1460 [2020-10-14 04:52:23,791 INFO L226 Difference]: Without dead ends: 1440 [2020-10-14 04:52:23,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:52:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2020-10-14 04:52:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1429. [2020-10-14 04:52:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-14 04:52:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1786 transitions. [2020-10-14 04:52:23,893 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1786 transitions. Word has length 46 [2020-10-14 04:52:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:23,893 INFO L479 AbstractCegarLoop]: Abstraction has 1429 states and 1786 transitions. [2020-10-14 04:52:23,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:52:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1786 transitions. [2020-10-14 04:52:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:52:23,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:23,895 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 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] [2020-10-14 04:52:23,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 04:52:23,895 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash -26910449, now seen corresponding path program 2 times [2020-10-14 04:52:23,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:23,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923835621] [2020-10-14 04:52:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:24,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:52:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-14 04:52:24,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:24,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:52:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:52:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:24,968 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-14 04:52:25,093 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-14 04:52:25,337 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-14 04:52:25,613 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-14 04:52:25,856 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2020-10-14 04:52:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:26,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:26,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:26,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:26,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:26,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:26,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923835621] [2020-10-14 04:52:26,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:26,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:52:26,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540759068] [2020-10-14 04:52:26,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:52:26,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:26,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:52:26,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:52:26,525 INFO L87 Difference]: Start difference. First operand 1429 states and 1786 transitions. Second operand 17 states. [2020-10-14 04:52:27,180 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2020-10-14 04:52:27,444 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2020-10-14 04:52:27,614 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-10-14 04:52:27,772 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-14 04:52:28,020 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 76 [2020-10-14 04:52:28,251 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2020-10-14 04:52:28,479 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2020-10-14 04:52:28,944 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2020-10-14 04:52:29,400 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 113 [2020-10-14 04:52:29,611 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2020-10-14 04:52:29,948 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-10-14 04:52:30,559 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-10-14 04:52:30,769 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-10-14 04:52:31,238 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 107 [2020-10-14 04:52:31,502 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 73 [2020-10-14 04:52:32,098 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2020-10-14 04:52:32,735 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-14 04:52:33,052 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-14 04:52:33,927 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2020-10-14 04:52:34,567 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-14 04:52:34,863 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-14 04:52:35,115 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-14 04:52:35,350 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-14 04:52:35,556 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-14 04:52:35,746 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-14 04:52:35,970 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2020-10-14 04:52:36,174 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-14 04:52:36,374 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-14 04:52:36,828 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 04:52:36,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:36,893 INFO L93 Difference]: Finished difference Result 1916 states and 2394 transitions. [2020-10-14 04:52:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 04:52:36,893 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-14 04:52:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:36,899 INFO L225 Difference]: With dead ends: 1916 [2020-10-14 04:52:36,899 INFO L226 Difference]: Without dead ends: 1914 [2020-10-14 04:52:36,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=498, Invalid=2154, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 04:52:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-14 04:52:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1541. [2020-10-14 04:52:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-10-14 04:52:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1936 transitions. [2020-10-14 04:52:37,014 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1936 transitions. Word has length 47 [2020-10-14 04:52:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:37,014 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 1936 transitions. [2020-10-14 04:52:37,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:52:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1936 transitions. [2020-10-14 04:52:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:52:37,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:37,016 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:37,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 04:52:37,017 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:37,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:37,017 INFO L82 PathProgramCache]: Analyzing trace with hash 2041386076, now seen corresponding path program 2 times [2020-10-14 04:52:37,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:37,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181178030] [2020-10-14 04:52:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:37,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:37,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:52:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:52:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-14 04:52:37,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:37,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:52:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:52:37,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:37,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:37,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:37,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:37,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:37,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:52:37,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181178030] [2020-10-14 04:52:37,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:37,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:52:37,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424641160] [2020-10-14 04:52:37,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:52:37,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:37,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:52:37,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:52:37,954 INFO L87 Difference]: Start difference. First operand 1541 states and 1936 transitions. Second operand 11 states. [2020-10-14 04:52:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:38,872 INFO L93 Difference]: Finished difference Result 2284 states and 2857 transitions. [2020-10-14 04:52:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:52:38,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-14 04:52:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:38,877 INFO L225 Difference]: With dead ends: 2284 [2020-10-14 04:52:38,877 INFO L226 Difference]: Without dead ends: 1369 [2020-10-14 04:52:38,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:52:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2020-10-14 04:52:38,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1087. [2020-10-14 04:52:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-10-14 04:52:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1376 transitions. [2020-10-14 04:52:38,962 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1376 transitions. Word has length 47 [2020-10-14 04:52:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:38,962 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1376 transitions. [2020-10-14 04:52:38,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:52:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1376 transitions. [2020-10-14 04:52:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:52:38,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:38,964 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2020-10-14 04:52:38,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 04:52:38,964 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:38,964 INFO L82 PathProgramCache]: Analyzing trace with hash -903901785, now seen corresponding path program 1 times [2020-10-14 04:52:38,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:38,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249398383] [2020-10-14 04:52:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:42,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:42,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:52:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:52:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3228 [2020-10-14 04:52:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:42,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:52:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:52:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:42,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:42,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:42,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:42,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:42,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:42,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249398383] [2020-10-14 04:52:42,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:42,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:52:42,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566001066] [2020-10-14 04:52:42,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:52:42,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:42,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:52:42,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:52:42,548 INFO L87 Difference]: Start difference. First operand 1087 states and 1376 transitions. Second operand 12 states. [2020-10-14 04:52:43,629 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-14 04:52:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:43,816 INFO L93 Difference]: Finished difference Result 1277 states and 1610 transitions. [2020-10-14 04:52:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:52:43,817 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-14 04:52:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:43,821 INFO L225 Difference]: With dead ends: 1277 [2020-10-14 04:52:43,821 INFO L226 Difference]: Without dead ends: 1234 [2020-10-14 04:52:43,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:52:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2020-10-14 04:52:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1117. [2020-10-14 04:52:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-10-14 04:52:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1411 transitions. [2020-10-14 04:52:43,933 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1411 transitions. Word has length 47 [2020-10-14 04:52:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:43,934 INFO L479 AbstractCegarLoop]: Abstraction has 1117 states and 1411 transitions. [2020-10-14 04:52:43,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:52:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1411 transitions. [2020-10-14 04:52:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:43,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:43,936 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, 1, 1, 1, 1, 1] [2020-10-14 04:52:43,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 04:52:43,936 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:43,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1777859314, now seen corresponding path program 4 times [2020-10-14 04:52:43,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:43,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185616851] [2020-10-14 04:52:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:46,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:46,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:46,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:52:46,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2613 [2020-10-14 04:52:46,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:46,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:52:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:52:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:47,120 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-10-14 04:52:47,248 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-14 04:52:47,386 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-14 04:52:47,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:47,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:47,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:47,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:47,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:47,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:47,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:47,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185616851] [2020-10-14 04:52:47,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:47,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:52:47,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465578088] [2020-10-14 04:52:47,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:52:47,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:47,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:52:47,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:52:47,817 INFO L87 Difference]: Start difference. First operand 1117 states and 1411 transitions. Second operand 16 states. [2020-10-14 04:52:48,310 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-14 04:52:48,597 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-14 04:52:48,800 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-14 04:52:50,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:50,192 INFO L93 Difference]: Finished difference Result 1598 states and 2020 transitions. [2020-10-14 04:52:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:52:50,192 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:52:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:50,196 INFO L225 Difference]: With dead ends: 1598 [2020-10-14 04:52:50,197 INFO L226 Difference]: Without dead ends: 1272 [2020-10-14 04:52:50,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:52:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-10-14 04:52:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1133. [2020-10-14 04:52:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-10-14 04:52:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1434 transitions. [2020-10-14 04:52:50,307 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1434 transitions. Word has length 48 [2020-10-14 04:52:50,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:50,308 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1434 transitions. [2020-10-14 04:52:50,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:52:50,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1434 transitions. [2020-10-14 04:52:50,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:52:50,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:50,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:50,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 04:52:50,310 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:50,310 INFO L82 PathProgramCache]: Analyzing trace with hash 212785866, now seen corresponding path program 1 times [2020-10-14 04:52:50,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:50,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233532198] [2020-10-14 04:52:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:50,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:50,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:51,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:52,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:52,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:52:52,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:52:52,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-14 04:52:52,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:52,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:52:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:52:52,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:52,494 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-14 04:52:53,390 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 109 [2020-10-14 04:52:53,687 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-14 04:52:54,007 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-14 04:52:54,254 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-14 04:52:54,448 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-14 04:52:54,587 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-10-14 04:52:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:54,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:54,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:54,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:52:54,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:54,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:54,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:52:54,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233532198] [2020-10-14 04:52:54,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:54,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:52:54,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582806274] [2020-10-14 04:52:54,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:52:54,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:54,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:52:54,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:52:54,856 INFO L87 Difference]: Start difference. First operand 1133 states and 1434 transitions. Second operand 14 states. [2020-10-14 04:52:55,336 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-14 04:52:55,641 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 81 [2020-10-14 04:52:55,981 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 93 [2020-10-14 04:52:56,606 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 119 [2020-10-14 04:52:57,144 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 104 [2020-10-14 04:52:58,083 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 165 [2020-10-14 04:52:58,989 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 143 [2020-10-14 04:52:59,576 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 123 [2020-10-14 04:52:59,798 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-14 04:53:00,000 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 04:53:00,191 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-14 04:53:00,385 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-14 04:53:00,571 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-14 04:53:00,752 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-14 04:53:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:01,097 INFO L93 Difference]: Finished difference Result 1153 states and 1458 transitions. [2020-10-14 04:53:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:53:01,098 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-14 04:53:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:01,101 INFO L225 Difference]: With dead ends: 1153 [2020-10-14 04:53:01,101 INFO L226 Difference]: Without dead ends: 1128 [2020-10-14 04:53:01,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:53:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-10-14 04:53:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1118. [2020-10-14 04:53:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-10-14 04:53:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1418 transitions. [2020-10-14 04:53:01,189 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1418 transitions. Word has length 48 [2020-10-14 04:53:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:01,189 INFO L479 AbstractCegarLoop]: Abstraction has 1118 states and 1418 transitions. [2020-10-14 04:53:01,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:53:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1418 transitions. [2020-10-14 04:53:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:53:01,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:01,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:01,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 04:53:01,190 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:01,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:01,191 INFO L82 PathProgramCache]: Analyzing trace with hash -702292547, now seen corresponding path program 1 times [2020-10-14 04:53:01,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:01,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105716154] [2020-10-14 04:53:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:02,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:03,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:03,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:53:03,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:53:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2609 [2020-10-14 04:53:03,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:03,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:53:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:53:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:04,076 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-14 04:53:04,529 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-14 04:53:04,772 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-14 04:53:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:05,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:05,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:05,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:05,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:05,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:05,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105716154] [2020-10-14 04:53:05,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:05,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:53:05,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785277860] [2020-10-14 04:53:05,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:53:05,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:05,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:53:05,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:53:05,414 INFO L87 Difference]: Start difference. First operand 1118 states and 1418 transitions. Second operand 17 states. [2020-10-14 04:53:05,768 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 52 [2020-10-14 04:53:06,011 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 55 [2020-10-14 04:53:06,218 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 58 [2020-10-14 04:53:06,570 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 69 [2020-10-14 04:53:06,866 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 62 [2020-10-14 04:53:07,020 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-14 04:53:07,475 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2020-10-14 04:53:07,753 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-14 04:53:08,142 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 93 [2020-10-14 04:53:08,301 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-14 04:53:08,670 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-14 04:53:09,042 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-14 04:53:09,306 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-14 04:53:09,607 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-14 04:53:09,928 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-14 04:53:10,194 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-14 04:53:10,338 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-14 04:53:11,101 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-14 04:53:11,424 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-14 04:53:11,635 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-14 04:53:11,937 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-10-14 04:53:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:12,092 INFO L93 Difference]: Finished difference Result 1420 states and 1788 transitions. [2020-10-14 04:53:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 04:53:12,093 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-10-14 04:53:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:12,099 INFO L225 Difference]: With dead ends: 1420 [2020-10-14 04:53:12,099 INFO L226 Difference]: Without dead ends: 1404 [2020-10-14 04:53:12,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=375, Invalid=1185, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 04:53:12,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-14 04:53:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1238. [2020-10-14 04:53:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-10-14 04:53:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1568 transitions. [2020-10-14 04:53:12,202 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1568 transitions. Word has length 48 [2020-10-14 04:53:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:12,202 INFO L479 AbstractCegarLoop]: Abstraction has 1238 states and 1568 transitions. [2020-10-14 04:53:12,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:53:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1568 transitions. [2020-10-14 04:53:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 04:53:12,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:12,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2020-10-14 04:53:12,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 04:53:12,204 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:12,204 INFO L82 PathProgramCache]: Analyzing trace with hash -449547183, now seen corresponding path program 1 times [2020-10-14 04:53:12,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:12,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961213924] [2020-10-14 04:53:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:12,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:12,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:12,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:13,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:17,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 04:53:17,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:53:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 04:53:17,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:17,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:53:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:53:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:17,692 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-10-14 04:53:17,937 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-10-14 04:53:18,161 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 32 [2020-10-14 04:53:18,469 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 38 [2020-10-14 04:53:18,665 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 36 [2020-10-14 04:53:18,818 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 30 [2020-10-14 04:53:18,973 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-10-14 04:53:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:19,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:19,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:19,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:19,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:19,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:19,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:53:19,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961213924] [2020-10-14 04:53:19,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:19,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:53:19,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624230417] [2020-10-14 04:53:19,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:53:19,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:53:19,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:53:19,255 INFO L87 Difference]: Start difference. First operand 1238 states and 1568 transitions. Second operand 16 states. [2020-10-14 04:53:19,921 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-14 04:53:20,057 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-14 04:53:20,283 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-14 04:53:20,444 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-14 04:53:20,694 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-14 04:53:21,110 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-14 04:53:21,326 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-14 04:53:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:22,244 INFO L93 Difference]: Finished difference Result 1400 states and 1754 transitions. [2020-10-14 04:53:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:53:22,245 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-14 04:53:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:22,250 INFO L225 Difference]: With dead ends: 1400 [2020-10-14 04:53:22,251 INFO L226 Difference]: Without dead ends: 1398 [2020-10-14 04:53:22,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=220, Invalid=836, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:53:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2020-10-14 04:53:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1255. [2020-10-14 04:53:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2020-10-14 04:53:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1590 transitions. [2020-10-14 04:53:22,353 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1590 transitions. Word has length 49 [2020-10-14 04:53:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:22,353 INFO L479 AbstractCegarLoop]: Abstraction has 1255 states and 1590 transitions. [2020-10-14 04:53:22,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:53:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1590 transitions. [2020-10-14 04:53:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:53:22,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:22,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2020-10-14 04:53:22,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 04:53:22,355 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:22,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2120922579, now seen corresponding path program 1 times [2020-10-14 04:53:22,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:22,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377987623] [2020-10-14 04:53:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:24,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2415 [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:53:24,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:25,136 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-10-14 04:53:25,329 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-10-14 04:53:25,501 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-10-14 04:53:25,908 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2020-10-14 04:53:26,288 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2020-10-14 04:53:26,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:26,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:26,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:26,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:26,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:53:26,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377987623] [2020-10-14 04:53:26,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:26,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:53:26,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734863742] [2020-10-14 04:53:26,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:53:26,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:26,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:53:26,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:53:26,538 INFO L87 Difference]: Start difference. First operand 1255 states and 1590 transitions. Second operand 15 states. [2020-10-14 04:53:26,907 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-14 04:53:27,505 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-14 04:53:27,880 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-14 04:53:28,150 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-14 04:53:28,391 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-14 04:53:28,609 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-14 04:53:29,141 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2020-10-14 04:53:29,584 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 90 [2020-10-14 04:53:30,035 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2020-10-14 04:53:30,301 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73