/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-queue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:34:11,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:34:11,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:34:11,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:34:11,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:34:11,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:34:11,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:34:11,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:34:11,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:34:11,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:34:11,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:34:11,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:34:11,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:34:11,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:34:11,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:34:11,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:34:11,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:34:11,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:34:11,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:34:11,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:34:11,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:34:11,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:34:11,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:34:11,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:34:11,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:34:11,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:34:11,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:34:11,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:34:11,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:34:11,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:34:11,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:34:11,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:34:11,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:34:11,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:34:11,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:34:11,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:34:11,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:34:11,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:34:11,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:34:11,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:34:11,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:34:11,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:34:11,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:34:11,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:34:11,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:34:11,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:34:11,905 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:34:11,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:34:11,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:34:11,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:34:11,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:34:11,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:34:11,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:34:11,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:34:11,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:34:11,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:34:11,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:34:11,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:34:11,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:34:11,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:34:11,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:34:11,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:34:11,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:34:11,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:11,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:34:11,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:34:11,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:34:11,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:34:11,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:34:11,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:34:11,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:34:11,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:34:12,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:34:12,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:34:12,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:34:12,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:34:12,279 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:34:12,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-queue-2.i [2020-10-12 15:34:12,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d79da5f54/4cf094913d514e0698ad49221b071970/FLAG1e0de5c38 [2020-10-12 15:34:12,889 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:34:12,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-queue-2.i [2020-10-12 15:34:12,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d79da5f54/4cf094913d514e0698ad49221b071970/FLAG1e0de5c38 [2020-10-12 15:34:13,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d79da5f54/4cf094913d514e0698ad49221b071970 [2020-10-12 15:34:13,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:34:13,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:34:13,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:13,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:34:13,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:34:13,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f17307f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13, skipping insertion in model container [2020-10-12 15:34:13,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:34:13,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:34:13,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:13,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:34:13,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:13,814 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:34:13,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13 WrapperNode [2020-10-12 15:34:13,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:13,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:34:13,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:34:13,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:34:13,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... [2020-10-12 15:34:13,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:34:13,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:34:13,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:34:13,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:34:13,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:34:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:34:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:34:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:34:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:34:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:34:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:34:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:34:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:34:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:34:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:34:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:34:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:34:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:34:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:34:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:34:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:34:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:34:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:34:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:34:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:34:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:34:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:34:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:34:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:34:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:34:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:34:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:34:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:34:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:34:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:34:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:34:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:34:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:34:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:34:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:34:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:34:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:34:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:34:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:34:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:34:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:34:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:34:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:34:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:34:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:34:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:34:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:34:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:34:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:34:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:34:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:34:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:34:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:34:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:34:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:34:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:34:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:34:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:34:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:34:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:34:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:34:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:34:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:34:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:34:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:34:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:34:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:34:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:34:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:34:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:34:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:34:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:34:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:34:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:34:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:34:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:34:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:34:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:34:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:34:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:34:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:34:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:34:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:34:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:34:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:34:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:34:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:34:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:34:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:34:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:34:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:34:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:34:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:34:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:34:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:34:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:34:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:34:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:34:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:34:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:34:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:34:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:34:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:34:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:34:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:34:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:34:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:34:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:34:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:34:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:34:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:34:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:34:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:34:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:34:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:34:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:34:14,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:34:14,730 INFO L295 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-12 15:34:14,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:14 BoogieIcfgContainer [2020-10-12 15:34:14,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:34:14,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:34:14,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:34:14,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:34:14,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:34:13" (1/3) ... [2020-10-12 15:34:14,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a4862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:14, skipping insertion in model container [2020-10-12 15:34:14,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:13" (2/3) ... [2020-10-12 15:34:14,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a4862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:14, skipping insertion in model container [2020-10-12 15:34:14,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:14" (3/3) ... [2020-10-12 15:34:14,760 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2020-10-12 15:34:14,772 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:34:14,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2020-10-12 15:34:14,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2020-10-12 15:34:14,820 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:34:14,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:34:14,820 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:34:14,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:34:14,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:34:14,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:34:14,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:34:14,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:34:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-12 15:34:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-12 15:34:14,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:14,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:14,853 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash 786631415, now seen corresponding path program 1 times [2020-10-12 15:34:14,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:14,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612376631] [2020-10-12 15:34:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:34:15,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-12 15:34:15,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:34:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:34:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:15,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:34:15,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:15,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:15,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612376631] [2020-10-12 15:34:15,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:15,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:15,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72975771] [2020-10-12 15:34:15,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:15,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:15,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:15,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:15,374 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-10-12 15:34:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:15,651 INFO L93 Difference]: Finished difference Result 165 states and 277 transitions. [2020-10-12 15:34:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:15,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-12 15:34:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:15,666 INFO L225 Difference]: With dead ends: 165 [2020-10-12 15:34:15,666 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 15:34:15,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 15:34:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-12 15:34:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 15:34:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-12 15:34:15,720 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 9 [2020-10-12 15:34:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:15,720 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-12 15:34:15,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-12 15:34:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 15:34:15,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:15,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:15,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:34:15,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:15,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1923530661, now seen corresponding path program 1 times [2020-10-12 15:34:15,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:15,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665335054] [2020-10-12 15:34:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:34:15,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 15:34:15,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:34:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:34:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:15,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:15,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665335054] [2020-10-12 15:34:15,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:15,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:15,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111597669] [2020-10-12 15:34:15,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:15,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:15,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:15,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:15,991 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-10-12 15:34:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:16,146 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-12 15:34:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:16,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-12 15:34:16,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:16,148 INFO L225 Difference]: With dead ends: 74 [2020-10-12 15:34:16,149 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 15:34:16,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 15:34:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-12 15:34:16,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 15:34:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-12 15:34:16,161 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 13 [2020-10-12 15:34:16,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:16,162 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-12 15:34:16,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-12 15:34:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 15:34:16,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:16,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:16,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:34:16,164 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:16,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1449483421, now seen corresponding path program 1 times [2020-10-12 15:34:16,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:16,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233939154] [2020-10-12 15:34:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:34:16,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:34:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:34:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:16,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:16,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:16,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:16,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:16,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233939154] [2020-10-12 15:34:16,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:16,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:16,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254144274] [2020-10-12 15:34:16,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:16,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:16,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:16,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:16,262 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 4 states. [2020-10-12 15:34:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:16,416 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2020-10-12 15:34:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:16,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-12 15:34:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:16,418 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:34:16,418 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 15:34:16,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:16,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 15:34:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-12 15:34:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 15:34:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-10-12 15:34:16,431 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 16 [2020-10-12 15:34:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:16,432 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-10-12 15:34:16,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-10-12 15:34:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:34:16,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:16,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:16,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:34:16,434 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:16,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1095322203, now seen corresponding path program 1 times [2020-10-12 15:34:16,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:16,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559015253] [2020-10-12 15:34:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:34:16,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:16,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-12 15:34:16,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:34:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:34:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:16,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559015253] [2020-10-12 15:34:16,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:16,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:16,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792584923] [2020-10-12 15:34:16,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:16,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:16,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:16,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:16,835 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 6 states. [2020-10-12 15:34:17,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:17,044 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2020-10-12 15:34:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:17,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-12 15:34:17,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:17,046 INFO L225 Difference]: With dead ends: 95 [2020-10-12 15:34:17,046 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 15:34:17,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 15:34:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-12 15:34:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 15:34:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2020-10-12 15:34:17,066 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 21 [2020-10-12 15:34:17,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:17,067 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2020-10-12 15:34:17,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:17,068 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2020-10-12 15:34:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:34:17,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:17,069 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:17,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:34:17,070 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:17,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:17,070 INFO L82 PathProgramCache]: Analyzing trace with hash -648846271, now seen corresponding path program 1 times [2020-10-12 15:34:17,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:17,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076258615] [2020-10-12 15:34:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:34:17,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-12 15:34:17,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:34:17,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 15:34:17,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:17,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:17,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076258615] [2020-10-12 15:34:17,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:17,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:17,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601514755] [2020-10-12 15:34:17,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:17,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:17,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:17,406 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 7 states. [2020-10-12 15:34:17,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:17,683 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-10-12 15:34:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:17,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-12 15:34:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:17,685 INFO L225 Difference]: With dead ends: 138 [2020-10-12 15:34:17,685 INFO L226 Difference]: Without dead ends: 136 [2020-10-12 15:34:17,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-12 15:34:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 88. [2020-10-12 15:34:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 15:34:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-10-12 15:34:17,695 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 23 [2020-10-12 15:34:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:17,695 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-10-12 15:34:17,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-10-12 15:34:17,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:34:17,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:17,697 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:17,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:34:17,697 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:17,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:17,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1678311806, now seen corresponding path program 1 times [2020-10-12 15:34:17,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:17,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405550334] [2020-10-12 15:34:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:34:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 15:34:17,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:34:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:17,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:17,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:17,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405550334] [2020-10-12 15:34:17,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:17,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:17,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386544872] [2020-10-12 15:34:17,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:17,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:17,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:17,999 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 7 states. [2020-10-12 15:34:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:18,225 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-10-12 15:34:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:18,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-12 15:34:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:18,227 INFO L225 Difference]: With dead ends: 136 [2020-10-12 15:34:18,227 INFO L226 Difference]: Without dead ends: 134 [2020-10-12 15:34:18,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-12 15:34:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-10-12 15:34:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 15:34:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-10-12 15:34:18,236 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 24 [2020-10-12 15:34:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:18,237 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-10-12 15:34:18,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-10-12 15:34:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:18,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:18,238 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:18,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:34:18,239 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:18,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:18,239 INFO L82 PathProgramCache]: Analyzing trace with hash 133467485, now seen corresponding path program 1 times [2020-10-12 15:34:18,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:18,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112821259] [2020-10-12 15:34:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:18,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 15:34:18,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:34:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:34:18,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:18,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:18,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:18,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112821259] [2020-10-12 15:34:18,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:18,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:18,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283907382] [2020-10-12 15:34:18,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:18,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:18,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:18,590 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 7 states. [2020-10-12 15:34:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:18,896 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2020-10-12 15:34:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:18,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-12 15:34:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:18,898 INFO L225 Difference]: With dead ends: 134 [2020-10-12 15:34:18,898 INFO L226 Difference]: Without dead ends: 132 [2020-10-12 15:34:18,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-12 15:34:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2020-10-12 15:34:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 15:34:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2020-10-12 15:34:18,924 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 25 [2020-10-12 15:34:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:18,924 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2020-10-12 15:34:18,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2020-10-12 15:34:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:34:18,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:18,931 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:18,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:34:18,932 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:18,933 INFO L82 PathProgramCache]: Analyzing trace with hash 876787366, now seen corresponding path program 1 times [2020-10-12 15:34:18,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:18,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22556426] [2020-10-12 15:34:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:34:19,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 15:34:19,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:19,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:34:19,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:34:19,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:19,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:19,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:19,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:19,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22556426] [2020-10-12 15:34:19,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:19,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:19,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533720043] [2020-10-12 15:34:19,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:19,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:19,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:19,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:19,111 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand 4 states. [2020-10-12 15:34:19,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:19,295 INFO L93 Difference]: Finished difference Result 195 states and 225 transitions. [2020-10-12 15:34:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:19,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-12 15:34:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:19,296 INFO L225 Difference]: With dead ends: 195 [2020-10-12 15:34:19,297 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 15:34:19,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 15:34:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2020-10-12 15:34:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 15:34:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-12 15:34:19,318 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 27 [2020-10-12 15:34:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:19,320 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-12 15:34:19,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-12 15:34:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:34:19,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:19,323 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:19,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:34:19,326 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:19,327 INFO L82 PathProgramCache]: Analyzing trace with hash -795743119, now seen corresponding path program 1 times [2020-10-12 15:34:19,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:19,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380407429] [2020-10-12 15:34:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:34:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-12 15:34:19,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:34:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:19,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:20,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:20,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:20,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380407429] [2020-10-12 15:34:20,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:20,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:20,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320923153] [2020-10-12 15:34:20,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:20,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:20,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:20,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:20,024 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 8 states. [2020-10-12 15:34:20,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:20,274 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-12 15:34:20,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:20,275 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-12 15:34:20,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:20,276 INFO L225 Difference]: With dead ends: 101 [2020-10-12 15:34:20,276 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:34:20,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:34:20,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2020-10-12 15:34:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-12 15:34:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-10-12 15:34:20,288 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 31 [2020-10-12 15:34:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:20,289 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-10-12 15:34:20,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-10-12 15:34:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:34:20,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:20,291 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:20,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:34:20,291 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:20,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1419476814, now seen corresponding path program 1 times [2020-10-12 15:34:20,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:20,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391791773] [2020-10-12 15:34:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:34:20,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-12 15:34:20,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:34:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:20,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:20,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:20,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:20,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:20,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:20,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391791773] [2020-10-12 15:34:20,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:20,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:20,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34500404] [2020-10-12 15:34:20,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:20,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:20,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:20,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:20,763 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 8 states. [2020-10-12 15:34:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:20,999 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-10-12 15:34:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:20,999 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-12 15:34:20,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:21,000 INFO L225 Difference]: With dead ends: 86 [2020-10-12 15:34:21,000 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 15:34:21,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 15:34:21,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-12 15:34:21,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 15:34:21,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-10-12 15:34:21,007 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 32 [2020-10-12 15:34:21,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:21,008 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-10-12 15:34:21,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-10-12 15:34:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:21,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:21,016 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:21,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:34:21,016 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:21,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:21,017 INFO L82 PathProgramCache]: Analyzing trace with hash 922995253, now seen corresponding path program 1 times [2020-10-12 15:34:21,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:21,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047712375] [2020-10-12 15:34:21,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:21,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 15:34:21,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:34:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:34:21,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:21,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:21,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:21,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:21,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047712375] [2020-10-12 15:34:21,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:21,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:21,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807396472] [2020-10-12 15:34:21,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:21,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:21,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:21,203 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 5 states. [2020-10-12 15:34:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:21,337 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2020-10-12 15:34:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:21,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-12 15:34:21,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:21,341 INFO L225 Difference]: With dead ends: 159 [2020-10-12 15:34:21,341 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 15:34:21,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:21,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 15:34:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-12 15:34:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 15:34:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-10-12 15:34:21,348 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 33 [2020-10-12 15:34:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:21,348 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-10-12 15:34:21,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-10-12 15:34:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:21,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:21,350 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:21,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:34:21,351 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:21,351 INFO L82 PathProgramCache]: Analyzing trace with hash 922997175, now seen corresponding path program 1 times [2020-10-12 15:34:21,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:21,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188620000] [2020-10-12 15:34:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:21,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 15:34:21,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:34:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:21,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:21,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:21,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188620000] [2020-10-12 15:34:21,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:21,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:21,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647163051] [2020-10-12 15:34:21,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:21,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:21,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:21,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:21,685 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 8 states. [2020-10-12 15:34:21,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:21,989 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-10-12 15:34:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:21,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-12 15:34:21,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:21,991 INFO L225 Difference]: With dead ends: 112 [2020-10-12 15:34:21,991 INFO L226 Difference]: Without dead ends: 110 [2020-10-12 15:34:21,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:21,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-12 15:34:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2020-10-12 15:34:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 15:34:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2020-10-12 15:34:22,012 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 33 [2020-10-12 15:34:22,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:22,012 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2020-10-12 15:34:22,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2020-10-12 15:34:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:22,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:22,013 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:22,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:34:22,013 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:22,014 INFO L82 PathProgramCache]: Analyzing trace with hash 699517325, now seen corresponding path program 1 times [2020-10-12 15:34:22,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:22,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090886532] [2020-10-12 15:34:22,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:22,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-12 15:34:22,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:34:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:22,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:22,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:22,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:22,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090886532] [2020-10-12 15:34:22,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:22,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:22,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817347362] [2020-10-12 15:34:22,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:22,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:22,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:22,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:22,479 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 8 states. [2020-10-12 15:34:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:22,672 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2020-10-12 15:34:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:22,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-12 15:34:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:22,674 INFO L225 Difference]: With dead ends: 98 [2020-10-12 15:34:22,674 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 15:34:22,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 15:34:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-12 15:34:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-12 15:34:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-10-12 15:34:22,680 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-10-12 15:34:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:22,681 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-10-12 15:34:22,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-10-12 15:34:22,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:34:22,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:22,682 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:22,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:34:22,682 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:22,683 INFO L82 PathProgramCache]: Analyzing trace with hash -610162986, now seen corresponding path program 1 times [2020-10-12 15:34:22,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:22,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194825586] [2020-10-12 15:34:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:34:22,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-12 15:34:22,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:34:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:23,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:23,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:23,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:23,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:23,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194825586] [2020-10-12 15:34:23,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:23,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:23,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949171770] [2020-10-12 15:34:23,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:23,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:23,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:23,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:23,030 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 8 states. [2020-10-12 15:34:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:23,354 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-12 15:34:23,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:23,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-12 15:34:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:23,356 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:34:23,356 INFO L226 Difference]: Without dead ends: 155 [2020-10-12 15:34:23,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-12 15:34:23,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 113. [2020-10-12 15:34:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-12 15:34:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-10-12 15:34:23,364 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 35 [2020-10-12 15:34:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:23,365 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-10-12 15:34:23,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-10-12 15:34:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:34:23,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:23,367 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:23,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:34:23,367 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2040823409, now seen corresponding path program 1 times [2020-10-12 15:34:23,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:23,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356132686] [2020-10-12 15:34:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:34:23,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:23,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-12 15:34:23,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:34:23,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:23,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:23,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:23,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356132686] [2020-10-12 15:34:23,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:23,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:23,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004032972] [2020-10-12 15:34:23,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:23,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:23,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:23,844 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 10 states. [2020-10-12 15:34:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:24,350 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-12 15:34:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:24,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-12 15:34:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:24,353 INFO L225 Difference]: With dead ends: 165 [2020-10-12 15:34:24,353 INFO L226 Difference]: Without dead ends: 163 [2020-10-12 15:34:24,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:24,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-12 15:34:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-10-12 15:34:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 15:34:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-10-12 15:34:24,368 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 36 [2020-10-12 15:34:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:24,369 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-10-12 15:34:24,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-10-12 15:34:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:34:24,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:24,370 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:24,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:34:24,370 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:24,371 INFO L82 PathProgramCache]: Analyzing trace with hash 143436019, now seen corresponding path program 1 times [2020-10-12 15:34:24,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:24,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628174981] [2020-10-12 15:34:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:24,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:34:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-12 15:34:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:24,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:34:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:24,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:24,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:24,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:24,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:24,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628174981] [2020-10-12 15:34:24,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:24,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:24,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436415755] [2020-10-12 15:34:24,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:24,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:24,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:24,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:24,816 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 8 states. [2020-10-12 15:34:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:25,150 INFO L93 Difference]: Finished difference Result 161 states and 172 transitions. [2020-10-12 15:34:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:25,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-12 15:34:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:25,151 INFO L225 Difference]: With dead ends: 161 [2020-10-12 15:34:25,152 INFO L226 Difference]: Without dead ends: 159 [2020-10-12 15:34:25,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-12 15:34:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 129. [2020-10-12 15:34:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 15:34:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2020-10-12 15:34:25,167 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 36 [2020-10-12 15:34:25,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:25,168 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2020-10-12 15:34:25,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2020-10-12 15:34:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:34:25,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:25,169 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:25,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:34:25,169 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:25,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:25,169 INFO L82 PathProgramCache]: Analyzing trace with hash -385872481, now seen corresponding path program 1 times [2020-10-12 15:34:25,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:25,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477969843] [2020-10-12 15:34:25,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:34:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 15:34:25,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:34:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:34:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:25,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:25,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:25,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:34:25,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477969843] [2020-10-12 15:34:25,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:25,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:25,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424581394] [2020-10-12 15:34:25,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:25,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:25,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:25,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:25,374 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand 4 states. [2020-10-12 15:34:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:25,515 INFO L93 Difference]: Finished difference Result 192 states and 211 transitions. [2020-10-12 15:34:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:25,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 15:34:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:25,517 INFO L225 Difference]: With dead ends: 192 [2020-10-12 15:34:25,517 INFO L226 Difference]: Without dead ends: 140 [2020-10-12 15:34:25,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:25,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-12 15:34:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2020-10-12 15:34:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-12 15:34:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-10-12 15:34:25,526 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 39 [2020-10-12 15:34:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:25,526 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-10-12 15:34:25,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-10-12 15:34:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:34:25,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:25,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:25,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:34:25,528 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1727270787, now seen corresponding path program 1 times [2020-10-12 15:34:25,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:25,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797992181] [2020-10-12 15:34:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:34:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 15:34:25,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:34:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:25,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:25,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:25,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:25,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797992181] [2020-10-12 15:34:25,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:25,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:25,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436949009] [2020-10-12 15:34:25,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:25,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:25,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:25,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:25,829 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 9 states. [2020-10-12 15:34:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:26,300 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-10-12 15:34:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:26,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-12 15:34:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:26,302 INFO L225 Difference]: With dead ends: 152 [2020-10-12 15:34:26,303 INFO L226 Difference]: Without dead ends: 121 [2020-10-12 15:34:26,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:26,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-12 15:34:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-12 15:34:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 15:34:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2020-10-12 15:34:26,313 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 41 [2020-10-12 15:34:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:26,314 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2020-10-12 15:34:26,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2020-10-12 15:34:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:34:26,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:26,315 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:26,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:34:26,316 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:26,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash 971335430, now seen corresponding path program 2 times [2020-10-12 15:34:26,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:26,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83434972] [2020-10-12 15:34:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:34:26,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 15:34:26,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:34:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:34:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:26,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:26,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:26,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:34:26,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83434972] [2020-10-12 15:34:26,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:26,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:26,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772663251] [2020-10-12 15:34:26,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:26,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:26,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:26,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:26,471 INFO L87 Difference]: Start difference. First operand 121 states and 133 transitions. Second operand 4 states. [2020-10-12 15:34:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:26,592 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2020-10-12 15:34:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:26,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-12 15:34:26,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:26,593 INFO L225 Difference]: With dead ends: 185 [2020-10-12 15:34:26,593 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:34:26,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:34:26,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-12 15:34:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 15:34:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2020-10-12 15:34:26,601 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 43 [2020-10-12 15:34:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:26,602 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2020-10-12 15:34:26,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2020-10-12 15:34:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:34:26,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:26,603 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:26,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:34:26,603 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:26,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:26,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1357539163, now seen corresponding path program 1 times [2020-10-12 15:34:26,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:26,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700807857] [2020-10-12 15:34:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:27,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:34:27,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-12 15:34:27,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:34:27,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:27,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:27,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:27,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:27,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700807857] [2020-10-12 15:34:27,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:27,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:27,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702157906] [2020-10-12 15:34:27,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:27,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:27,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:27,231 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand 10 states. [2020-10-12 15:34:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:27,656 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-12 15:34:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:27,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-12 15:34:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:27,658 INFO L225 Difference]: With dead ends: 121 [2020-10-12 15:34:27,658 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 15:34:27,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 15:34:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2020-10-12 15:34:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 15:34:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2020-10-12 15:34:27,665 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 44 [2020-10-12 15:34:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:27,666 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2020-10-12 15:34:27,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2020-10-12 15:34:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:34:27,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:27,667 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:27,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:34:27,667 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:27,668 INFO L82 PathProgramCache]: Analyzing trace with hash 410027869, now seen corresponding path program 1 times [2020-10-12 15:34:27,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:27,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393922823] [2020-10-12 15:34:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:34:28,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:28,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-12 15:34:28,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:34:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:28,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:28,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:28,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:28,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393922823] [2020-10-12 15:34:28,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:28,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:28,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547372174] [2020-10-12 15:34:28,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:28,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:28,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:28,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:28,442 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand 9 states. [2020-10-12 15:34:28,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:28,821 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-12 15:34:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:28,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-12 15:34:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:28,824 INFO L225 Difference]: With dead ends: 107 [2020-10-12 15:34:28,824 INFO L226 Difference]: Without dead ends: 105 [2020-10-12 15:34:28,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-12 15:34:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-12 15:34:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 15:34:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2020-10-12 15:34:28,836 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 44 [2020-10-12 15:34:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:28,837 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2020-10-12 15:34:28,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2020-10-12 15:34:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:34:28,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:28,838 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:28,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:34:28,839 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:28,839 INFO L82 PathProgramCache]: Analyzing trace with hash -479677976, now seen corresponding path program 1 times [2020-10-12 15:34:28,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:28,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800557132] [2020-10-12 15:34:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:34:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-12 15:34:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:34:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:29,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:29,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:29,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800557132] [2020-10-12 15:34:29,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:29,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:29,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143186263] [2020-10-12 15:34:29,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:29,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:29,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:29,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:29,924 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 11 states. [2020-10-12 15:34:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:30,324 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-12 15:34:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:30,324 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-12 15:34:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:30,325 INFO L225 Difference]: With dead ends: 115 [2020-10-12 15:34:30,325 INFO L226 Difference]: Without dead ends: 113 [2020-10-12 15:34:30,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-12 15:34:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2020-10-12 15:34:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 15:34:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2020-10-12 15:34:30,333 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 45 [2020-10-12 15:34:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:30,334 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2020-10-12 15:34:30,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2020-10-12 15:34:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:34:30,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:30,335 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:30,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:34:30,335 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:30,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1704581452, now seen corresponding path program 1 times [2020-10-12 15:34:30,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:30,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364261203] [2020-10-12 15:34:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:34:30,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-12 15:34:30,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:34:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:30,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:30,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:30,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364261203] [2020-10-12 15:34:30,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:30,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:30,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420649163] [2020-10-12 15:34:30,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:30,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:30,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:30,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:30,893 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 9 states. [2020-10-12 15:34:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:31,150 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-12 15:34:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:31,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-12 15:34:31,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:31,151 INFO L225 Difference]: With dead ends: 105 [2020-10-12 15:34:31,151 INFO L226 Difference]: Without dead ends: 103 [2020-10-12 15:34:31,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-12 15:34:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-12 15:34:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 15:34:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-10-12 15:34:31,160 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 45 [2020-10-12 15:34:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:31,160 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-10-12 15:34:31,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-10-12 15:34:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:34:31,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:31,161 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:31,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:34:31,161 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:31,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:31,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1791840934, now seen corresponding path program 1 times [2020-10-12 15:34:31,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:31,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145249978] [2020-10-12 15:34:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:31,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:34:31,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:31,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 15:34:31,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:31,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:34:31,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:31,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:31,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:31,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:31,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:31,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145249978] [2020-10-12 15:34:31,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:31,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:31,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575314984] [2020-10-12 15:34:31,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:31,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:31,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:31,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:31,721 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 9 states. [2020-10-12 15:34:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:32,140 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2020-10-12 15:34:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:32,141 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-12 15:34:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:32,142 INFO L225 Difference]: With dead ends: 161 [2020-10-12 15:34:32,142 INFO L226 Difference]: Without dead ends: 159 [2020-10-12 15:34:32,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-12 15:34:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2020-10-12 15:34:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-12 15:34:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2020-10-12 15:34:32,153 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 48 [2020-10-12 15:34:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:32,153 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2020-10-12 15:34:32,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2020-10-12 15:34:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 15:34:32,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:32,154 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:32,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:34:32,155 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:32,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:32,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1411094306, now seen corresponding path program 1 times [2020-10-12 15:34:32,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:32,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040265205] [2020-10-12 15:34:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:34:32,193 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:34:32,194 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:34:32,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:34:32,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:34:32 BoogieIcfgContainer [2020-10-12 15:34:32,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:34:32,224 INFO L168 Benchmark]: Toolchain (without parser) took 19078.90 ms. Allocated memory was 140.5 MB in the beginning and 465.0 MB in the end (delta: 324.5 MB). Free memory was 102.6 MB in the beginning and 99.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 327.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:32,225 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:34:32,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.24 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 169.9 MB in the end (delta: -67.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:32,226 INFO L168 Benchmark]: Boogie Preprocessor took 118.99 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 166.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:32,227 INFO L168 Benchmark]: RCFGBuilder took 808.91 ms. Allocated memory is still 203.9 MB. Free memory was 166.6 MB in the beginning and 110.7 MB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:32,227 INFO L168 Benchmark]: TraceAbstraction took 17472.19 ms. Allocated memory was 203.9 MB in the beginning and 465.0 MB in the end (delta: 261.1 MB). Free memory was 110.0 MB in the beginning and 99.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 271.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:32,230 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.24 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 169.9 MB in the end (delta: -67.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.99 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 166.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 808.91 ms. Allocated memory is still 203.9 MB. Free memory was 166.6 MB in the beginning and 110.7 MB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17472.19 ms. Allocated memory was 203.9 MB in the beginning and 465.0 MB in the end (delta: 261.1 MB). Free memory was 110.0 MB in the beginning and 99.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 271.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L990] SLL* item = head; [L991] int status = 0; [L993] COND TRUE __VERIFIER_nondet_int() [L995] item->next = malloc(sizeof(SLL)) [L996] EXPR item->next [L996] item->next->prev = item [L997] EXPR item->next [L997] item = item->next [L998] item->next = ((void*)0) [L1000] COND TRUE !status [L1002] item->data = 1 [L1003] status = 1 [L1016] COND FALSE !(!(head != ((void*)0))) [L1017] COND FALSE !(!(item != ((void*)0))) [L993] COND TRUE __VERIFIER_nondet_int() [L995] item->next = malloc(sizeof(SLL)) [L996] EXPR item->next [L996] item->next->prev = item [L997] EXPR item->next [L997] item = item->next [L998] item->next = ((void*)0) [L1000] COND FALSE !(!status) [L1005] COND TRUE status == 1 [L1007] item->data = 2 [L1008] status = 2 [L1016] COND FALSE !(!(head != ((void*)0))) [L1017] COND FALSE !(!(item != ((void*)0))) [L993] COND TRUE __VERIFIER_nondet_int() [L995] item->next = malloc(sizeof(SLL)) [L996] EXPR item->next [L996] item->next->prev = item [L997] EXPR item->next [L997] item = item->next [L998] item->next = ((void*)0) [L1000] COND FALSE !(!status) [L1005] COND FALSE !(status == 1) [L1010] COND TRUE status >= 2 [L1012] item->data = 3 [L1013] status = 3 [L1016] COND FALSE !(!(head != ((void*)0))) [L1017] COND FALSE !(!(item != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1020] COND FALSE !(!(head != ((void*)0))) [L1021] COND FALSE !(status == 1) [L1026] COND FALSE !(status == 2) [L1032] COND TRUE status == 3 [L1034] COND FALSE !(!(head != ((void*)0))) [L1035] EXPR head->next [L1035] COND FALSE !(!(head->next != ((void*)0))) [L1036] EXPR head->next [L1036] EXPR head->next->next [L1036] COND FALSE !(!(head->next->next != ((void*)0))) [L1037] EXPR head->next [L1037] EXPR head->next->next [L1037] EXPR head->next->next->next [L1037] COND FALSE !(!(head->next->next->next != ((void*)0))) [L1038] EXPR head->next [L1038] EXPR head->next->next [L1038] EXPR head->next->next->next [L1038] EXPR head->next->next->next->data [L1038] COND TRUE !(head->next->next->next->data != 3) [L1038] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 90 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.3s, OverallIterations: 25, TraceHistogramMax: 4, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1491 SDtfs, 1510 SDslu, 4244 SDs, 0 SdLazy, 4172 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 341 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 827 NumberOfCodeBlocks, 827 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 752 ConstructedInterpolants, 0 QuantifiedInterpolants, 425385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 47/254 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...