/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=NARROWEST --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/array-cav19/array_tiling_tcpy.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:26:06,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:26:06,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:26:06,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:26:06,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:26:06,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:26:06,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:26:06,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:26:06,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:26:06,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:26:06,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:26:06,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:26:06,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:26:06,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:26:06,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:26:06,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:26:06,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:26:06,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:26:06,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:26:06,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:26:06,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:26:06,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:26:06,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:26:06,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:26:06,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:26:06,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:26:06,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:26:06,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:26:06,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:26:06,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:26:06,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:26:06,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:26:06,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:26:06,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:26:06,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:26:06,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:26:06,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:26:06,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:26:06,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:26:06,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:26:06,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:26:06,893 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 [2020-10-13 04:26:06,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:26:06,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:26:06,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:26:06,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:26:06,921 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:26:06,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:26:06,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:26:06,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:26:06,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:26:06,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:26:06,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:26:06,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:26:06,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:26:06,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:26:06,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:26:06,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:26:06,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:26:06,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:26:06,929 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 04:26:07,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:26:07,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:26:07,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:26:07,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:26:07,252 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:26:07,253 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c [2020-10-13 04:26:07,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d51f74e/6216b0a71b5845ccb18aab5e8f32ca65/FLAG91ca251e7 [2020-10-13 04:26:07,771 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:26:07,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c [2020-10-13 04:26:07,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d51f74e/6216b0a71b5845ccb18aab5e8f32ca65/FLAG91ca251e7 [2020-10-13 04:26:08,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d51f74e/6216b0a71b5845ccb18aab5e8f32ca65 [2020-10-13 04:26:08,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:26:08,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:26:08,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:26:08,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:26:08,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:26:08,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55571c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08, skipping insertion in model container [2020-10-13 04:26:08,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:26:08,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:26:08,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:26:08,373 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:26:08,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:26:08,412 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:26:08,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08 WrapperNode [2020-10-13 04:26:08,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:26:08,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:26:08,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:26:08,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:26:08,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:26:08,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:26:08,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:26:08,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:26:08,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (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 [2020-10-13 04:26:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:26:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:26:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 04:26:08,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 04:26:08,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:26:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:26:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 04:26:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 04:26:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 04:26:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:26:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:26:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:26:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:26:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:26:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:26:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:26:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:26:08,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:26:08,851 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 04:26:08,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:26:08 BoogieIcfgContainer [2020-10-13 04:26:08,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:26:08,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:26:08,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:26:08,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:26:08,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:26:08" (1/3) ... [2020-10-13 04:26:08,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f892d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:26:08, skipping insertion in model container [2020-10-13 04:26:08,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (2/3) ... [2020-10-13 04:26:08,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f892d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:26:08, skipping insertion in model container [2020-10-13 04:26:08,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:26:08" (3/3) ... [2020-10-13 04:26:08,863 INFO L109 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2020-10-13 04:26:08,874 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:26:08,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:26:08,898 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:26:08,921 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:26:08,922 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:26:08,922 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:26:08,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:26:08,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:26:08,922 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:26:08,923 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:26:08,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:26:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-13 04:26:08,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 04:26:08,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:08,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:08,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:08,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2005819169, now seen corresponding path program 1 times [2020-10-13 04:26:08,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:08,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356154395] [2020-10-13 04:26:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:09,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 04:26:09,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:26:09,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-13 04:26:09,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 04:26:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 04:26:09,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:09,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:09,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:26:09,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:09,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:09,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:09,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:09,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 04:26:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:09,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 04:26:09,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356154395] [2020-10-13 04:26:09,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:26:09,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:26:09,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158504144] [2020-10-13 04:26:09,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:26:09,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:26:09,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:26:09,645 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-10-13 04:26:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:09,736 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 04:26:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:26:09,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-13 04:26:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:09,747 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:26:09,747 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 04:26:09,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:26:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 04:26:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-13 04:26:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 04:26:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-13 04:26:09,791 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2020-10-13 04:26:09,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:09,792 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-13 04:26:09,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:26:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-13 04:26:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 04:26:09,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:09,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:09,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:26:09,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:09,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1588083549, now seen corresponding path program 1 times [2020-10-13 04:26:09,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:09,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114516118] [2020-10-13 04:26:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:09,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 04:26:10,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:26:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-13 04:26:10,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:26:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:26:10,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:10,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:10,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:10,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:10,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:10,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 04:26:10,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114516118] [2020-10-13 04:26:10,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:26:10,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 04:26:10,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83948992] [2020-10-13 04:26:10,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:26:10,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:26:10,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:26:10,249 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-10-13 04:26:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:10,346 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-13 04:26:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:26:10,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-13 04:26:10,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:10,350 INFO L225 Difference]: With dead ends: 43 [2020-10-13 04:26:10,350 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 04:26:10,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:26:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 04:26:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-10-13 04:26:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:26:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-13 04:26:10,362 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-10-13 04:26:10,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:10,363 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-13 04:26:10,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:26:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-13 04:26:10,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 04:26:10,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:10,364 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] [2020-10-13 04:26:10,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:26:10,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:10,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1462147519, now seen corresponding path program 1 times [2020-10-13 04:26:10,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:10,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693304111] [2020-10-13 04:26:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 04:26:10,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:26:10,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-13 04:26:10,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:26:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:26:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:26:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:10,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:26:10,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:10,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:10,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:10,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:26:10,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:26:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 04:26:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 04:26:10,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693304111] [2020-10-13 04:26:10,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:10,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:26:10,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586901255] [2020-10-13 04:26:10,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:26:10,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:10,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:26:10,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:26:10,823 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 8 states. [2020-10-13 04:26:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:11,029 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-10-13 04:26:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:26:11,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-13 04:26:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:11,031 INFO L225 Difference]: With dead ends: 47 [2020-10-13 04:26:11,032 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:26:11,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:26:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:26:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-10-13 04:26:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:26:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-13 04:26:11,040 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2020-10-13 04:26:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:11,040 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-13 04:26:11,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:26:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-13 04:26:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 04:26:11,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:11,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:11,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:26:11,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:11,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:11,043 INFO L82 PathProgramCache]: Analyzing trace with hash -696706977, now seen corresponding path program 2 times [2020-10-13 04:26:11,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:11,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116581755] [2020-10-13 04:26:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:11,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:11,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:11,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 04:26:11,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 04:26:11,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:26:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 04:26:11,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:11,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:11,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:11,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:11,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:11,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:11,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:11,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:11,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:11,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:11,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:11,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:11,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 04:26:11,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116581755] [2020-10-13 04:26:11,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:11,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:26:11,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4252630] [2020-10-13 04:26:11,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:26:11,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:11,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:26:11,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:26:11,495 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 10 states. [2020-10-13 04:26:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:11,737 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-10-13 04:26:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:26:11,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-13 04:26:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:11,753 INFO L225 Difference]: With dead ends: 38 [2020-10-13 04:26:11,754 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:26:11,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:26:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:26:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-13 04:26:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-13 04:26:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-13 04:26:11,762 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 23 [2020-10-13 04:26:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:11,762 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-13 04:26:11,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:26:11,762 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-13 04:26:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 04:26:11,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:11,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:11,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:26:11,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:11,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash 526973714, now seen corresponding path program 1 times [2020-10-13 04:26:11,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:11,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343537958] [2020-10-13 04:26:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:12,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:12,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 04:26:12,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:12,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-13 04:26:12,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:26:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:12,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 04:26:12,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:12,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:12,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:12,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:12,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:12,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:12,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:12,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:12,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:26:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:12,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:12,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:12,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:26:12,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 04:26:12,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343537958] [2020-10-13 04:26:12,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:12,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:26:12,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977495147] [2020-10-13 04:26:12,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:26:12,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:12,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:26:12,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:26:12,316 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2020-10-13 04:26:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:12,744 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-10-13 04:26:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:26:12,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-13 04:26:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:12,746 INFO L225 Difference]: With dead ends: 47 [2020-10-13 04:26:12,746 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 04:26:12,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:26:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 04:26:12,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-13 04:26:12,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 04:26:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-13 04:26:12,755 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 31 [2020-10-13 04:26:12,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:12,756 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-13 04:26:12,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:26:12,756 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-13 04:26:12,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 04:26:12,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:12,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:12,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:26:12,758 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:12,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:12,758 INFO L82 PathProgramCache]: Analyzing trace with hash 523270853, now seen corresponding path program 2 times [2020-10-13 04:26:12,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:12,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72787469] [2020-10-13 04:26:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 04:26:13,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-13 04:26:13,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:26:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 04:26:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:13,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:13,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:13,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:13,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:13,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:13,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:13,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:13,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:13,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:26:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:13,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:13,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:13,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:26:13,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:13,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:26:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:13,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:13,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:13,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:13,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:13,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 04:26:13,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72787469] [2020-10-13 04:26:13,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:13,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:26:13,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192108359] [2020-10-13 04:26:13,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:26:13,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:13,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:26:13,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:26:13,427 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 14 states. [2020-10-13 04:26:14,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:14,110 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-13 04:26:14,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:26:14,111 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-13 04:26:14,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:14,114 INFO L225 Difference]: With dead ends: 68 [2020-10-13 04:26:14,114 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:26:14,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2020-10-13 04:26:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:26:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-10-13 04:26:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:26:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:26:14,127 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 39 [2020-10-13 04:26:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:14,127 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:26:14,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:26:14,127 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:26:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 04:26:14,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:14,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:14,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:26:14,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:14,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1426006371, now seen corresponding path program 3 times [2020-10-13 04:26:14,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:14,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209338022] [2020-10-13 04:26:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 04:26:14,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-13 04:26:14,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:26:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 04:26:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:14,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:14,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:14,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:14,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:14,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:14,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:26:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:14,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:14,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:14,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:14,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:14,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:14,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:26:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:14,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:14,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 04:26:14,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209338022] [2020-10-13 04:26:14,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:14,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:26:14,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785771324] [2020-10-13 04:26:14,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:26:14,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:14,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:26:14,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:26:14,717 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 13 states. [2020-10-13 04:26:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:15,288 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-13 04:26:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:26:15,288 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-13 04:26:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:15,290 INFO L225 Difference]: With dead ends: 86 [2020-10-13 04:26:15,290 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:26:15,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2020-10-13 04:26:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:26:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2020-10-13 04:26:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:26:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-10-13 04:26:15,305 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 41 [2020-10-13 04:26:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:15,306 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-10-13 04:26:15,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:26:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-10-13 04:26:15,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 04:26:15,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:15,308 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:15,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:26:15,308 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:15,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:15,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1371445377, now seen corresponding path program 4 times [2020-10-13 04:26:15,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:15,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295189880] [2020-10-13 04:26:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:15,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:15,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 04:26:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-13 04:26:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:26:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 04:26:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:16,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:16,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:16,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:16,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:16,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:16,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:16,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:16,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:16,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:26:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:16,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:16,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:16,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:16,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:16,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:26:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:16,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:16,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:16,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:16,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:16,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 04:26:16,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295189880] [2020-10-13 04:26:16,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:16,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:26:16,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400752497] [2020-10-13 04:26:16,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:26:16,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:16,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:26:16,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:26:16,058 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 14 states. [2020-10-13 04:26:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:16,827 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-10-13 04:26:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:26:16,828 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-13 04:26:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:16,830 INFO L225 Difference]: With dead ends: 94 [2020-10-13 04:26:16,830 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:26:16,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-10-13 04:26:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:26:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 50. [2020-10-13 04:26:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 04:26:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-13 04:26:16,854 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 43 [2020-10-13 04:26:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:16,854 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-13 04:26:16,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:26:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-13 04:26:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 04:26:16,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:16,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:16,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:26:16,856 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:16,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:16,857 INFO L82 PathProgramCache]: Analyzing trace with hash 115513208, now seen corresponding path program 5 times [2020-10-13 04:26:16,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:16,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755091432] [2020-10-13 04:26:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:16,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:17,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 04:26:17,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-13 04:26:17,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:26:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 04:26:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:17,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:17,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:17,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:17,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:17,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:17,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:17,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:17,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:17,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:26:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:17,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:18,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:18,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:26:18,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:18,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:26:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:18,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:18,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:18,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:18,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:18,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:26:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:18,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:26:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 04:26:18,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755091432] [2020-10-13 04:26:18,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:18,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:26:18,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685174266] [2020-10-13 04:26:18,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:26:18,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:18,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:26:18,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:26:18,054 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 15 states. [2020-10-13 04:26:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:18,785 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-10-13 04:26:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:26:18,786 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-10-13 04:26:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:18,787 INFO L225 Difference]: With dead ends: 76 [2020-10-13 04:26:18,787 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 04:26:18,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-10-13 04:26:18,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 04:26:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-13 04:26:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-13 04:26:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-10-13 04:26:18,797 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 47 [2020-10-13 04:26:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:18,798 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-10-13 04:26:18,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:26:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-10-13 04:26:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 04:26:18,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:18,799 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:18,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:26:18,799 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:18,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:18,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1894236182, now seen corresponding path program 6 times [2020-10-13 04:26:18,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:18,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281971720] [2020-10-13 04:26:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:19,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 04:26:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-13 04:26:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:26:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 04:26:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:19,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:19,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:19,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:19,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:19,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:19,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:26:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:19,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:19,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:19,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:19,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:26:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:19,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:19,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:19,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:19,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:26:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:19,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 04:26:19,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281971720] [2020-10-13 04:26:19,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:19,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:26:19,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968989178] [2020-10-13 04:26:19,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:26:19,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:26:19,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:26:19,535 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 16 states. [2020-10-13 04:26:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:20,413 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-10-13 04:26:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 04:26:20,413 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-13 04:26:20,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:20,414 INFO L225 Difference]: With dead ends: 82 [2020-10-13 04:26:20,414 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:26:20,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:26:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:26:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-10-13 04:26:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:26:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-10-13 04:26:20,429 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 49 [2020-10-13 04:26:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:20,429 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-10-13 04:26:20,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:26:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-10-13 04:26:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 04:26:20,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:20,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:20,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:26:20,431 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:20,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1850030388, now seen corresponding path program 7 times [2020-10-13 04:26:20,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:20,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443838035] [2020-10-13 04:26:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:20,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:20,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 04:26:20,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-13 04:26:20,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:26:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 04:26:20,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:21,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:21,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:21,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:21,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:21,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:26:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:21,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:21,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:21,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:26:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:21,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:21,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:21,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:21,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:21,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:21,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:21,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:26:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:21,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:21,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 04:26:21,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443838035] [2020-10-13 04:26:21,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:21,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:26:21,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831207402] [2020-10-13 04:26:21,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:26:21,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:21,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:26:21,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:26:21,119 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 15 states. [2020-10-13 04:26:21,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:21,951 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2020-10-13 04:26:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 04:26:21,951 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-13 04:26:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:21,953 INFO L225 Difference]: With dead ends: 92 [2020-10-13 04:26:21,953 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:26:21,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:26:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:26:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 60. [2020-10-13 04:26:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 04:26:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-10-13 04:26:21,964 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 51 [2020-10-13 04:26:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:21,965 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-10-13 04:26:21,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:26:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-10-13 04:26:21,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 04:26:21,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:21,966 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:21,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:26:21,967 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:21,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:21,967 INFO L82 PathProgramCache]: Analyzing trace with hash 220986313, now seen corresponding path program 8 times [2020-10-13 04:26:21,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:21,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484062816] [2020-10-13 04:26:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:22,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 04:26:22,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-13 04:26:22,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:26:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 04:26:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:23,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:23,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:23,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:23,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:23,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:23,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:23,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:23,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:23,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:23,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:23,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:26:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:23,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:23,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:23,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:23,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:26:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:23,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:23,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:23,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:23,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:23,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:26:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:23,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:23,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:26:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:23,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:23,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:23,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:23,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:23,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 04:26:23,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484062816] [2020-10-13 04:26:23,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:23,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:26:23,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444181190] [2020-10-13 04:26:23,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:26:23,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:23,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:26:23,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:26:23,177 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 18 states. [2020-10-13 04:26:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:24,330 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-10-13 04:26:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 04:26:24,337 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-13 04:26:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:24,339 INFO L225 Difference]: With dead ends: 94 [2020-10-13 04:26:24,340 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:26:24,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 04:26:24,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:26:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2020-10-13 04:26:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:26:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-10-13 04:26:24,365 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 57 [2020-10-13 04:26:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:24,366 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-10-13 04:26:24,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:26:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-10-13 04:26:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 04:26:24,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:24,368 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:24,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:26:24,368 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:24,369 INFO L82 PathProgramCache]: Analyzing trace with hash 369456871, now seen corresponding path program 9 times [2020-10-13 04:26:24,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:24,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441047674] [2020-10-13 04:26:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:24,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:24,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 04:26:24,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-13 04:26:24,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:26:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 04:26:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:25,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:25,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:25,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:25,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:25,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:25,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:26:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:25,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:25,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:25,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:25,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:25,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:26:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:25,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:25,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:25,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:26:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:25,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:25,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:25,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:25,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:25,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:26:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:25,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:25,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 04:26:25,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441047674] [2020-10-13 04:26:25,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:25,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:26:25,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971512424] [2020-10-13 04:26:25,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:26:25,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:25,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:26:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:26:25,515 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 18 states. [2020-10-13 04:26:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:27,120 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-10-13 04:26:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 04:26:27,121 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-13 04:26:27,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:27,123 INFO L225 Difference]: With dead ends: 119 [2020-10-13 04:26:27,123 INFO L226 Difference]: Without dead ends: 117 [2020-10-13 04:26:27,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 04:26:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-13 04:26:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 87. [2020-10-13 04:26:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:26:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-10-13 04:26:27,140 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 59 [2020-10-13 04:26:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:27,140 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-10-13 04:26:27,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:26:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-10-13 04:26:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 04:26:27,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:27,141 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:27,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:26:27,142 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:27,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1315742341, now seen corresponding path program 10 times [2020-10-13 04:26:27,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:27,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300900367] [2020-10-13 04:26:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:27,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:27,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 04:26:27,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-13 04:26:27,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:26:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 04:26:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:28,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:28,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:28,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:28,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:28,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:28,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:28,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:28,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:28,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:28,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:28,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:28,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:28,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:26:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:28,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:28,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:28,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:28,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:28,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:28,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:26:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:28,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:28,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:28,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:28,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:28,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:28,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:28,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:26:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:28,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:28,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:28,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:28,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:26:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:28,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:28,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:28,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:28,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 04:26:28,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300900367] [2020-10-13 04:26:28,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:28,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:26:28,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300870751] [2020-10-13 04:26:28,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:26:28,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:28,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:26:28,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:26:28,228 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 17 states. [2020-10-13 04:26:29,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:29,351 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-10-13 04:26:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 04:26:29,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-10-13 04:26:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:29,353 INFO L225 Difference]: With dead ends: 107 [2020-10-13 04:26:29,353 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 04:26:29,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:26:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 04:26:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 68. [2020-10-13 04:26:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 04:26:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-10-13 04:26:29,367 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 61 [2020-10-13 04:26:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:29,367 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-10-13 04:26:29,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:26:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-10-13 04:26:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 04:26:29,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:29,368 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:29,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:26:29,369 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:29,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1763781508, now seen corresponding path program 11 times [2020-10-13 04:26:29,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:29,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831503119] [2020-10-13 04:26:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:29,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:29,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 04:26:29,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-13 04:26:29,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 04:26:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 04:26:29,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:30,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:30,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:30,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:30,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:30,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:30,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:30,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:26:30,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:26:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:30,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:30,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:30,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:30,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:26:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:30,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:30,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:30,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:30,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:26:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:30,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:30,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:30,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:30,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:30,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:30,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:26:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:30,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:30,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:30,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:30,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:26:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:30,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:30,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 50 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:26:30,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831503119] [2020-10-13 04:26:30,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:30,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:26:30,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50166187] [2020-10-13 04:26:30,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:26:30,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:30,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:26:30,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:26:30,711 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 18 states. [2020-10-13 04:26:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:31,963 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2020-10-13 04:26:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:26:31,964 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 65 [2020-10-13 04:26:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:31,965 INFO L225 Difference]: With dead ends: 102 [2020-10-13 04:26:31,965 INFO L226 Difference]: Without dead ends: 71 [2020-10-13 04:26:31,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2020-10-13 04:26:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-13 04:26:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-13 04:26:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 04:26:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-10-13 04:26:31,976 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 65 [2020-10-13 04:26:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:31,976 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-10-13 04:26:31,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:26:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-10-13 04:26:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 04:26:31,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:31,978 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:31,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:26:31,978 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:31,978 INFO L82 PathProgramCache]: Analyzing trace with hash -133017190, now seen corresponding path program 12 times [2020-10-13 04:26:31,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:31,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311573765] [2020-10-13 04:26:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:32,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:32,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:26:32,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:32,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-13 04:26:32,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 04:26:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:26:32,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:33,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:33,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:33,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:33,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:33,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:33,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:33,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:26:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:33,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:33,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:33,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:33,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:26:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:33,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:33,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:33,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:33,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:26:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:33,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:33,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:33,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:33,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:33,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:26:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:33,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:33,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:33,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:33,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:26:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:33,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:33,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:26:33,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311573765] [2020-10-13 04:26:33,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:33,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 04:26:33,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199294536] [2020-10-13 04:26:33,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 04:26:33,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 04:26:33,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-13 04:26:33,242 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 20 states. [2020-10-13 04:26:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:34,561 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-13 04:26:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 04:26:34,566 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-13 04:26:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:34,568 INFO L225 Difference]: With dead ends: 108 [2020-10-13 04:26:34,568 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:26:34,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 04:26:34,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:26:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2020-10-13 04:26:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:26:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2020-10-13 04:26:34,591 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 67 [2020-10-13 04:26:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:34,592 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2020-10-13 04:26:34,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 04:26:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2020-10-13 04:26:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:26:34,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:34,593 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:34,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:26:34,593 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:34,593 INFO L82 PathProgramCache]: Analyzing trace with hash -631570632, now seen corresponding path program 13 times [2020-10-13 04:26:34,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:34,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144053336] [2020-10-13 04:26:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:35,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:35,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 04:26:35,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:35,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-13 04:26:35,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 04:26:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 04:26:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:35,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:35,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:35,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:35,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:35,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:35,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:35,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:35,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:35,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:35,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:35,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:35,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:35,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:26:35,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:35,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:35,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:35,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:26:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:35,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:35,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:35,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:35,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:35,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:26:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:35,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:35,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:35,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:35,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:35,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:35,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:35,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:26:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:35,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:35,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:35,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:35,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:35,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:26:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:35,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:35,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:35,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:35,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:26:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:35,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:35,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:35,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:35,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:35,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:26:35,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144053336] [2020-10-13 04:26:35,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:35,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 04:26:35,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568715351] [2020-10-13 04:26:35,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 04:26:35,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:35,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 04:26:35,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-13 04:26:35,806 INFO L87 Difference]: Start difference. First operand 99 states and 106 transitions. Second operand 20 states. [2020-10-13 04:26:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:37,502 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2020-10-13 04:26:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 04:26:37,503 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 69 [2020-10-13 04:26:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:37,504 INFO L225 Difference]: With dead ends: 137 [2020-10-13 04:26:37,506 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 04:26:37,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 04:26:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 04:26:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 101. [2020-10-13 04:26:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:26:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-10-13 04:26:37,527 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 69 [2020-10-13 04:26:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:37,528 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-10-13 04:26:37,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 04:26:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-10-13 04:26:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 04:26:37,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:37,529 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:37,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:26:37,529 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:37,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1294908758, now seen corresponding path program 14 times [2020-10-13 04:26:37,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:37,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085783047] [2020-10-13 04:26:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:38,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 04:26:38,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-13 04:26:38,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:26:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 04:26:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:38,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:38,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:38,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:38,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:38,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:38,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:38,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:38,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:38,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:38,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:38,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:38,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:38,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:38,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:38,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:26:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:38,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:38,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:38,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:38,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:26:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:38,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:38,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:38,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:38,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:26:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:38,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:38,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:38,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:38,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:38,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:38,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:26:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:38,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:38,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:38,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:26:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 10 proven. 86 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:26:38,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085783047] [2020-10-13 04:26:38,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:38,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:26:38,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619326934] [2020-10-13 04:26:38,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:26:38,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:38,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:26:38,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:26:38,664 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 19 states. [2020-10-13 04:26:40,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:40,117 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2020-10-13 04:26:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 04:26:40,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 71 [2020-10-13 04:26:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:40,119 INFO L225 Difference]: With dead ends: 121 [2020-10-13 04:26:40,119 INFO L226 Difference]: Without dead ends: 119 [2020-10-13 04:26:40,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 04:26:40,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-13 04:26:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2020-10-13 04:26:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-13 04:26:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-10-13 04:26:40,130 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 71 [2020-10-13 04:26:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:40,131 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-10-13 04:26:40,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:26:40,131 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-10-13 04:26:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 04:26:40,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:40,131 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:40,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:26:40,132 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:40,132 INFO L82 PathProgramCache]: Analyzing trace with hash 8309069, now seen corresponding path program 15 times [2020-10-13 04:26:40,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:40,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309923905] [2020-10-13 04:26:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:40,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:40,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 04:26:40,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-13 04:26:40,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 04:26:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 04:26:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:41,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:41,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:41,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:41,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:41,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:41,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:41,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:41,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:41,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:26:41,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:26:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:26:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:41,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:26:41,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:26:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:41,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:41,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:41,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:41,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:26:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:26:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:41,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:41,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:41,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:41,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:41,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:26:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:41,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:41,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:41,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:41,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:41,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:26:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:41,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:41,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:41,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:41,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 12 proven. 88 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 04:26:41,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309923905] [2020-10-13 04:26:41,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:41,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 04:26:41,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261252525] [2020-10-13 04:26:41,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 04:26:41,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:41,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 04:26:41,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:26:41,580 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 21 states. [2020-10-13 04:26:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:43,312 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2020-10-13 04:26:43,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 04:26:43,312 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2020-10-13 04:26:43,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:43,314 INFO L225 Difference]: With dead ends: 120 [2020-10-13 04:26:43,314 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 04:26:43,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 04:26:43,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 04:26:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 111. [2020-10-13 04:26:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 04:26:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2020-10-13 04:26:43,328 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 75 [2020-10-13 04:26:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:43,328 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2020-10-13 04:26:43,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 04:26:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2020-10-13 04:26:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 04:26:43,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:43,330 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:43,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:26:43,330 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:43,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash -603522837, now seen corresponding path program 16 times [2020-10-13 04:26:43,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:43,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298897793] [2020-10-13 04:26:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:43,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 04:26:43,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-13 04:26:43,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 04:26:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 04:26:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:44,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:44,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:44,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:26:44,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:26:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:44,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:44,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:44,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:26:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:44,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:44,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:26:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:44,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:44,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:44,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:44,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:26:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:44,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:44,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:44,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:44,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:44,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:26:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:44,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:44,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:44,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:44,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:26:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:44,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:44,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:44,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:44,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 97 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 04:26:44,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298897793] [2020-10-13 04:26:44,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:44,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 04:26:44,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912140688] [2020-10-13 04:26:44,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 04:26:44,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:44,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 04:26:44,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-13 04:26:44,755 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand 22 states. [2020-10-13 04:26:46,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:46,857 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2020-10-13 04:26:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 04:26:46,858 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 77 [2020-10-13 04:26:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:46,860 INFO L225 Difference]: With dead ends: 153 [2020-10-13 04:26:46,860 INFO L226 Difference]: Without dead ends: 151 [2020-10-13 04:26:46,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=1647, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 04:26:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-13 04:26:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2020-10-13 04:26:46,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:26:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-10-13 04:26:46,881 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 77 [2020-10-13 04:26:46,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:46,881 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-10-13 04:26:46,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 04:26:46,881 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-10-13 04:26:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 04:26:46,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:46,882 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:46,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:26:46,882 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:46,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:46,883 INFO L82 PathProgramCache]: Analyzing trace with hash -163464951, now seen corresponding path program 17 times [2020-10-13 04:26:46,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:46,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241802359] [2020-10-13 04:26:46,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:47,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:47,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 04:26:47,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-13 04:26:47,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 04:26:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 04:26:47,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:48,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:48,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:48,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:48,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:48,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:26:48,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:26:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:48,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:48,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:48,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:26:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:48,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:48,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:48,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:48,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:48,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:48,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:26:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:48,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:48,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:48,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:26:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:48,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:48,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:48,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:48,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:48,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:26:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:48,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:48,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:26:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:48,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:48,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:48,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 04:26:48,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241802359] [2020-10-13 04:26:48,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:48,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 04:26:48,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990163767] [2020-10-13 04:26:48,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 04:26:48,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:48,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 04:26:48,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-13 04:26:48,266 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 22 states. [2020-10-13 04:26:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:50,336 INFO L93 Difference]: Finished difference Result 156 states and 173 transitions. [2020-10-13 04:26:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 04:26:50,337 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 79 [2020-10-13 04:26:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:50,339 INFO L225 Difference]: With dead ends: 156 [2020-10-13 04:26:50,339 INFO L226 Difference]: Without dead ends: 154 [2020-10-13 04:26:50,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=167, Invalid=1725, Unknown=0, NotChecked=0, Total=1892 [2020-10-13 04:26:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-13 04:26:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 115. [2020-10-13 04:26:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 04:26:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2020-10-13 04:26:50,360 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 79 [2020-10-13 04:26:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:50,361 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2020-10-13 04:26:50,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 04:26:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2020-10-13 04:26:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 04:26:50,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:50,365 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:50,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:26:50,365 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:50,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1825368487, now seen corresponding path program 18 times [2020-10-13 04:26:50,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:50,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153719928] [2020-10-13 04:26:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:50,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:50,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:50,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 04:26:50,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-13 04:26:50,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 04:26:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 04:26:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:51,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:51,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:51,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:51,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:51,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:51,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:51,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:51,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:51,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:51,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:51,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:51,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:51,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:51,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:26:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:51,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:51,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:51,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:51,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:51,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:51,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:26:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:51,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:51,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:51,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:51,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:51,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:51,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:26:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:51,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:51,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:51,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:51,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:51,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:51,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:26:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:51,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:51,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:51,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:51,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:51,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:26:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:51,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:51,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:51,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:51,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:51,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:26:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:51,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:51,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:51,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 04:26:51,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153719928] [2020-10-13 04:26:51,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:51,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 04:26:51,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32191868] [2020-10-13 04:26:51,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 04:26:51,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:51,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 04:26:51,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:26:51,868 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 21 states. [2020-10-13 04:26:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:53,674 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2020-10-13 04:26:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 04:26:53,677 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 81 [2020-10-13 04:26:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:53,678 INFO L225 Difference]: With dead ends: 160 [2020-10-13 04:26:53,679 INFO L226 Difference]: Without dead ends: 158 [2020-10-13 04:26:53,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 04:26:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-13 04:26:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 117. [2020-10-13 04:26:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 04:26:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2020-10-13 04:26:53,699 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 81 [2020-10-13 04:26:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:53,699 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2020-10-13 04:26:53,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 04:26:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2020-10-13 04:26:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 04:26:53,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:53,700 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:53,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:26:53,701 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:53,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1482546688, now seen corresponding path program 19 times [2020-10-13 04:26:53,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:53,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928444684] [2020-10-13 04:26:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:54,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:54,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 04:26:54,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-13 04:26:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 04:26:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 04:26:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:55,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:55,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:55,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:26:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:26:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:55,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:55,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:26:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:55,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:55,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:26:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:55,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:55,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:55,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:55,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:26:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:55,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:55,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:26:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:55,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:26:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:55,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:55,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:26:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:55,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:55,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:55,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:55,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:55,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 98 proven. 30 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 04:26:55,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928444684] [2020-10-13 04:26:55,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:55,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 04:26:55,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186265665] [2020-10-13 04:26:55,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 04:26:55,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:55,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 04:26:55,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:26:55,444 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 21 states. [2020-10-13 04:26:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:56,908 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2020-10-13 04:26:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 04:26:56,909 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-10-13 04:26:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:56,910 INFO L225 Difference]: With dead ends: 156 [2020-10-13 04:26:56,911 INFO L226 Difference]: Without dead ends: 117 [2020-10-13 04:26:56,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 04:26:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-13 04:26:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-13 04:26:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 04:26:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2020-10-13 04:26:56,932 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 83 [2020-10-13 04:26:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:56,932 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2020-10-13 04:26:56,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 04:26:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2020-10-13 04:26:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 04:26:56,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:56,934 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:56,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:26:56,934 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:56,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:56,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1833855685, now seen corresponding path program 20 times [2020-10-13 04:26:56,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:56,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275224330] [2020-10-13 04:26:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:57,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:57,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 04:26:57,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-13 04:26:57,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 04:26:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 04:26:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:58,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:58,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:58,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:58,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:26:58,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:26:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:58,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:26:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:26:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:58,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:26:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:58,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:26:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:58,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:26:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:58,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 12 proven. 136 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 04:26:58,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275224330] [2020-10-13 04:26:58,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:58,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 04:26:58,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810670997] [2020-10-13 04:26:58,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 04:26:58,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:58,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 04:26:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-13 04:26:58,385 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand 22 states. [2020-10-13 04:27:00,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:00,247 INFO L93 Difference]: Finished difference Result 167 states and 184 transitions. [2020-10-13 04:27:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 04:27:00,248 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 83 [2020-10-13 04:27:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:00,250 INFO L225 Difference]: With dead ends: 167 [2020-10-13 04:27:00,251 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 04:27:00,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 04:27:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 04:27:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 88. [2020-10-13 04:27:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-13 04:27:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-10-13 04:27:00,266 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 83 [2020-10-13 04:27:00,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:00,266 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-10-13 04:27:00,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 04:27:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-10-13 04:27:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 04:27:00,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:00,267 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:00,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:27:00,267 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:00,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1048809374, now seen corresponding path program 21 times [2020-10-13 04:27:00,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:00,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630626639] [2020-10-13 04:27:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:00,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 04:27:00,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-13 04:27:00,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 04:27:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 04:27:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:01,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:01,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:01,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:01,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:27:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:01,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:01,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:27:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:01,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:27:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:01,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:01,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:27:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:01,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:01,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:27:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:01,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:01,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:27:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:01,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:01,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:27:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:01,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:01,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:01,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 14 proven. 123 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 04:27:01,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630626639] [2020-10-13 04:27:01,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:01,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 04:27:01,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037265584] [2020-10-13 04:27:01,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 04:27:01,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:01,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 04:27:01,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:27:01,782 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 23 states. [2020-10-13 04:27:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:03,829 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-10-13 04:27:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 04:27:03,830 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 85 [2020-10-13 04:27:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:03,831 INFO L225 Difference]: With dead ends: 134 [2020-10-13 04:27:03,831 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 04:27:03,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=153, Invalid=1653, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 04:27:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 04:27:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2020-10-13 04:27:03,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 04:27:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions. [2020-10-13 04:27:03,852 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 85 [2020-10-13 04:27:03,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:03,853 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions. [2020-10-13 04:27:03,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 04:27:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions. [2020-10-13 04:27:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 04:27:03,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:03,854 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:03,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:27:03,855 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:03,855 INFO L82 PathProgramCache]: Analyzing trace with hash 839078332, now seen corresponding path program 22 times [2020-10-13 04:27:03,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:03,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201633953] [2020-10-13 04:27:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:04,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 04:27:04,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-13 04:27:04,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 04:27:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 04:27:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:05,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:05,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:05,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:05,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:27:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:05,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:05,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:27:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:05,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:05,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:27:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:05,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:27:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:05,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:05,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:05,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:27:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:05,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:05,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:27:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:05,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:05,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:27:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:05,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:05,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:05,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:05,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:05,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:05,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:05,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:05,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 14 proven. 134 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 04:27:05,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201633953] [2020-10-13 04:27:05,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:05,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 04:27:05,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816858170] [2020-10-13 04:27:05,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 04:27:05,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:05,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 04:27:05,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-13 04:27:05,262 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand 24 states. [2020-10-13 04:27:07,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:07,926 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2020-10-13 04:27:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 04:27:07,927 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 87 [2020-10-13 04:27:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:07,929 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:27:07,929 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 04:27:07,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=174, Invalid=1988, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 04:27:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 04:27:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 127. [2020-10-13 04:27:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-13 04:27:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2020-10-13 04:27:07,948 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 87 [2020-10-13 04:27:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:07,948 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2020-10-13 04:27:07,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 04:27:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2020-10-13 04:27:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 04:27:07,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:07,950 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:07,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:27:07,950 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:07,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1151009882, now seen corresponding path program 23 times [2020-10-13 04:27:07,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:07,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113856835] [2020-10-13 04:27:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:08,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:08,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 04:27:08,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-13 04:27:08,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 04:27:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 04:27:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:09,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:09,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:09,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:09,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:27:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:09,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:09,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:09,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:27:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:09,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:09,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:09,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:27:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:09,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:09,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:27:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:09,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:09,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:09,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:09,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:27:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:09,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:09,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:27:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:09,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:27:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:09,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:09,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 14 proven. 147 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 04:27:09,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113856835] [2020-10-13 04:27:09,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:09,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 04:27:09,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846862654] [2020-10-13 04:27:09,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 04:27:09,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:09,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 04:27:09,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-13 04:27:09,400 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand 24 states. [2020-10-13 04:27:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:12,081 INFO L93 Difference]: Finished difference Result 174 states and 193 transitions. [2020-10-13 04:27:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 04:27:12,082 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 89 [2020-10-13 04:27:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:12,084 INFO L225 Difference]: With dead ends: 174 [2020-10-13 04:27:12,084 INFO L226 Difference]: Without dead ends: 172 [2020-10-13 04:27:12,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=187, Invalid=2165, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 04:27:12,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-13 04:27:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 129. [2020-10-13 04:27:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-13 04:27:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2020-10-13 04:27:12,117 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 89 [2020-10-13 04:27:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:12,120 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2020-10-13 04:27:12,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 04:27:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2020-10-13 04:27:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 04:27:12,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:12,122 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:12,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:27:12,122 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:12,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:12,122 INFO L82 PathProgramCache]: Analyzing trace with hash 269518712, now seen corresponding path program 24 times [2020-10-13 04:27:12,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:12,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550672025] [2020-10-13 04:27:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:12,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 04:27:12,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-13 04:27:12,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 04:27:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 04:27:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:13,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:13,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:13,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:13,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:13,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:27:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:13,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:13,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:27:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:13,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:13,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:27:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:13,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:13,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:27:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:13,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:13,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:27:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:13,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:13,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:27:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:13,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:27:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:13,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:13,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:13,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 14 proven. 162 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 04:27:13,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550672025] [2020-10-13 04:27:13,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:13,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 04:27:13,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649415396] [2020-10-13 04:27:13,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 04:27:13,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:13,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 04:27:13,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:27:13,710 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand 23 states. [2020-10-13 04:27:15,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:15,750 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-10-13 04:27:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 04:27:15,751 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 91 [2020-10-13 04:27:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:15,753 INFO L225 Difference]: With dead ends: 150 [2020-10-13 04:27:15,753 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 04:27:15,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 04:27:15,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 04:27:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 96. [2020-10-13 04:27:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 04:27:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2020-10-13 04:27:15,769 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 91 [2020-10-13 04:27:15,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:15,769 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2020-10-13 04:27:15,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 04:27:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2020-10-13 04:27:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 04:27:15,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:15,771 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:15,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:27:15,771 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:15,771 INFO L82 PathProgramCache]: Analyzing trace with hash 702792529, now seen corresponding path program 25 times [2020-10-13 04:27:15,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:15,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839905577] [2020-10-13 04:27:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:15,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:16,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 04:27:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-13 04:27:16,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 04:27:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 04:27:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:17,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:17,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:17,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:27:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:17,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:17,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:27:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:17,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:27:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:17,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:27:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:27:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:17,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:27:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:27:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 04:27:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:17,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:17,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:17,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 16 proven. 153 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 04:27:17,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839905577] [2020-10-13 04:27:17,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:17,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 04:27:17,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643816961] [2020-10-13 04:27:17,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 04:27:17,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:17,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 04:27:17,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-13 04:27:17,623 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 24 states. [2020-10-13 04:27:18,334 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-13 04:27:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:20,242 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2020-10-13 04:27:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 04:27:20,243 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2020-10-13 04:27:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:20,244 INFO L225 Difference]: With dead ends: 146 [2020-10-13 04:27:20,244 INFO L226 Difference]: Without dead ends: 144 [2020-10-13 04:27:20,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 04:27:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-13 04:27:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 137. [2020-10-13 04:27:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-13 04:27:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2020-10-13 04:27:20,265 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 93 [2020-10-13 04:27:20,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:20,266 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2020-10-13 04:27:20,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 04:27:20,266 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2020-10-13 04:27:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 04:27:20,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:20,267 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:20,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:27:20,268 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:20,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1787201391, now seen corresponding path program 26 times [2020-10-13 04:27:20,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:20,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023377745] [2020-10-13 04:27:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:20,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 04:27:20,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-13 04:27:20,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 04:27:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 04:27:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:22,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:22,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:22,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:27:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:27:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:27:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:27:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:27:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:27:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:22,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:27:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:27:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 16 proven. 164 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 04:27:22,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023377745] [2020-10-13 04:27:22,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:22,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 04:27:22,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951081598] [2020-10-13 04:27:22,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 04:27:22,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:22,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 04:27:22,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:27:22,098 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand 25 states. [2020-10-13 04:27:22,838 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-13 04:27:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:24,779 INFO L93 Difference]: Finished difference Result 186 states and 206 transitions. [2020-10-13 04:27:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 04:27:24,780 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 95 [2020-10-13 04:27:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:24,782 INFO L225 Difference]: With dead ends: 186 [2020-10-13 04:27:24,782 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 04:27:24,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 04:27:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 04:27:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 139. [2020-10-13 04:27:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-13 04:27:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2020-10-13 04:27:24,809 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 95 [2020-10-13 04:27:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:24,810 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2020-10-13 04:27:24,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 04:27:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2020-10-13 04:27:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 04:27:24,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:24,811 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:24,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:27:24,812 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:24,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:24,812 INFO L82 PathProgramCache]: Analyzing trace with hash 227064845, now seen corresponding path program 27 times [2020-10-13 04:27:24,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:24,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18502695] [2020-10-13 04:27:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:25,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:25,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 04:27:25,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-13 04:27:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 04:27:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 04:27:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:26,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:27:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:27:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:27:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:27:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:27:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:27:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:27:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:27:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:26,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:26,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:26,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 16 proven. 177 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 04:27:26,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18502695] [2020-10-13 04:27:26,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:26,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 04:27:26,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337770394] [2020-10-13 04:27:26,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 04:27:26,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:26,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 04:27:26,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-13 04:27:26,676 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 26 states. [2020-10-13 04:27:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:29,796 INFO L93 Difference]: Finished difference Result 214 states and 241 transitions. [2020-10-13 04:27:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 04:27:29,797 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 97 [2020-10-13 04:27:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:29,799 INFO L225 Difference]: With dead ends: 214 [2020-10-13 04:27:29,799 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 04:27:29,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=170, Invalid=2280, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 04:27:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 04:27:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 141. [2020-10-13 04:27:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-13 04:27:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2020-10-13 04:27:29,831 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 97 [2020-10-13 04:27:29,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:29,832 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2020-10-13 04:27:29,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 04:27:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2020-10-13 04:27:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 04:27:29,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:29,833 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:29,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:27:29,834 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:29,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:29,834 INFO L82 PathProgramCache]: Analyzing trace with hash -120569557, now seen corresponding path program 28 times [2020-10-13 04:27:29,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:29,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251724354] [2020-10-13 04:27:29,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:30,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:30,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 04:27:30,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:30,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-13 04:27:30,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:30,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 04:27:30,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:30,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 04:27:30,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:31,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:31,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:31,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:31,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:27:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:31,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:27:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:31,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:27:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:31,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:27:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:31,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:27:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:31,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:27:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:31,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:27:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:31,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:31,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:27:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:31,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:31,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:31,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:31,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:31,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:31,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 16 proven. 192 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 04:27:31,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251724354] [2020-10-13 04:27:31,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:31,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 04:27:31,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953905415] [2020-10-13 04:27:31,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 04:27:31,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:31,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 04:27:31,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-13 04:27:31,700 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand 26 states. [2020-10-13 04:27:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:34,715 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2020-10-13 04:27:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 04:27:34,716 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 99 [2020-10-13 04:27:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:34,718 INFO L225 Difference]: With dead ends: 193 [2020-10-13 04:27:34,718 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 04:27:34,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=197, Invalid=2455, Unknown=0, NotChecked=0, Total=2652 [2020-10-13 04:27:34,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 04:27:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2020-10-13 04:27:34,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 04:27:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 156 transitions. [2020-10-13 04:27:34,746 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 156 transitions. Word has length 99 [2020-10-13 04:27:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:34,746 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 156 transitions. [2020-10-13 04:27:34,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 04:27:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2020-10-13 04:27:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 04:27:34,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:34,748 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:34,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:27:34,748 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash 54170628, now seen corresponding path program 29 times [2020-10-13 04:27:34,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:34,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815819834] [2020-10-13 04:27:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:34,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:35,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 04:27:35,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-13 04:27:35,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 04:27:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 04:27:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:36,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:36,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:36,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:36,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:36,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:36,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:36,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:36,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:36,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:36,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:27:36,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:36,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:36,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:27:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:36,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:36,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:36,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:36,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:36,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:36,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:27:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:36,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:36,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:36,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:36,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:36,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:27:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:36,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:36,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:36,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:27:36,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:27:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:37,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:37,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:37,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:27:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:27:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:37,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:37,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:37,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:27:37,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:27:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:37,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:37,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:37,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:37,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:37,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:37,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:37,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:37,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:27:37,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:27:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:37,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:37,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:37,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:37,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 04:27:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:37,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:37,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:37,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:37,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:37,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:27:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:37,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:37,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:37,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:27:37,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:37,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:27:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 130 proven. 75 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 04:27:37,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815819834] [2020-10-13 04:27:37,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:37,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 04:27:37,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064721898] [2020-10-13 04:27:37,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 04:27:37,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:37,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 04:27:37,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:27:37,145 INFO L87 Difference]: Start difference. First operand 143 states and 156 transitions. Second operand 25 states. [2020-10-13 04:27:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:39,226 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2020-10-13 04:27:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 04:27:39,226 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-10-13 04:27:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:39,228 INFO L225 Difference]: With dead ends: 190 [2020-10-13 04:27:39,228 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 04:27:39,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=319, Invalid=1751, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 04:27:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 04:27:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-13 04:27:39,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 04:27:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 155 transitions. [2020-10-13 04:27:39,257 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 155 transitions. Word has length 101 [2020-10-13 04:27:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:39,257 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 155 transitions. [2020-10-13 04:27:39,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 04:27:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 155 transitions. [2020-10-13 04:27:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 04:27:39,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:39,258 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:39,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:27:39,258 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:39,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:39,259 INFO L82 PathProgramCache]: Analyzing trace with hash 810219209, now seen corresponding path program 30 times [2020-10-13 04:27:39,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:39,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051459071] [2020-10-13 04:27:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:40,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:40,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 04:27:40,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:40,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-13 04:27:40,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 04:27:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:40,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 04:27:40,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:41,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:41,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:27:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:41,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:41,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:27:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:41,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:41,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:27:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:41,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:27:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:41,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:27:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:41,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:27:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:41,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 04:27:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:41,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:41,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:41,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:27:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:41,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:41,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:41,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 16 proven. 209 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 04:27:41,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051459071] [2020-10-13 04:27:41,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:41,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 04:27:41,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722994378] [2020-10-13 04:27:41,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 04:27:41,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:41,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 04:27:41,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:27:41,282 INFO L87 Difference]: Start difference. First operand 143 states and 155 transitions. Second operand 25 states. [2020-10-13 04:27:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:44,004 INFO L93 Difference]: Finished difference Result 164 states and 177 transitions. [2020-10-13 04:27:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 04:27:44,005 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-10-13 04:27:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:44,006 INFO L225 Difference]: With dead ends: 164 [2020-10-13 04:27:44,006 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 04:27:44,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=147, Invalid=1923, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 04:27:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 04:27:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 106. [2020-10-13 04:27:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-13 04:27:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-10-13 04:27:44,025 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 101 [2020-10-13 04:27:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:44,025 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-10-13 04:27:44,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 04:27:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-10-13 04:27:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 04:27:44,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:44,026 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:44,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:27:44,027 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1188977186, now seen corresponding path program 31 times [2020-10-13 04:27:44,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:44,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659407809] [2020-10-13 04:27:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:44,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:44,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 04:27:44,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-13 04:27:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 04:27:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 04:27:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:46,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:46,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:46,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:27:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:27:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:27:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:27:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:27:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:27:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:27:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:27:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:46,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:27:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:46,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:46,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:46,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:46,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:46,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 04:27:46,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659407809] [2020-10-13 04:27:46,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:46,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 04:27:46,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263484044] [2020-10-13 04:27:46,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 04:27:46,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 04:27:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-13 04:27:46,382 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 26 states. [2020-10-13 04:27:47,343 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-13 04:27:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:49,782 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2020-10-13 04:27:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 04:27:49,783 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 103 [2020-10-13 04:27:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:49,784 INFO L225 Difference]: With dead ends: 160 [2020-10-13 04:27:49,784 INFO L226 Difference]: Without dead ends: 158 [2020-10-13 04:27:49,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=177, Invalid=2273, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 04:27:49,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-13 04:27:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 151. [2020-10-13 04:27:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-13 04:27:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-13 04:27:49,806 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 103 [2020-10-13 04:27:49,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:49,806 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-13 04:27:49,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 04:27:49,807 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-13 04:27:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 04:27:49,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:49,807 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:49,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:27:49,807 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:49,808 INFO L82 PathProgramCache]: Analyzing trace with hash 816386240, now seen corresponding path program 32 times [2020-10-13 04:27:49,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:49,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237585998] [2020-10-13 04:27:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:50,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:50,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 04:27:50,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:50,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-13 04:27:50,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 04:27:50,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:50,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 04:27:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:52,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:52,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:52,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:52,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:27:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:52,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:27:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:52,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:27:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:52,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:27:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:52,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:27:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:27:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:52,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:27:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:52,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:27:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:52,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:27:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:52,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:52,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:52,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:52,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:52,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 18 proven. 211 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 04:27:52,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237585998] [2020-10-13 04:27:52,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:52,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 04:27:52,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592909517] [2020-10-13 04:27:52,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 04:27:52,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:52,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 04:27:52,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:27:52,339 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 27 states. [2020-10-13 04:27:55,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:55,931 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2020-10-13 04:27:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 04:27:55,932 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 105 [2020-10-13 04:27:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:55,934 INFO L225 Difference]: With dead ends: 205 [2020-10-13 04:27:55,934 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 04:27:55,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=193, Invalid=2563, Unknown=0, NotChecked=0, Total=2756 [2020-10-13 04:27:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 04:27:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 153. [2020-10-13 04:27:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 04:27:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2020-10-13 04:27:55,968 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 105 [2020-10-13 04:27:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:55,968 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2020-10-13 04:27:55,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 04:27:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2020-10-13 04:27:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 04:27:55,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:55,969 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:55,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:27:55,970 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:55,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:55,970 INFO L82 PathProgramCache]: Analyzing trace with hash -761227298, now seen corresponding path program 33 times [2020-10-13 04:27:55,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:55,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926688254] [2020-10-13 04:27:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:57,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:57,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 04:27:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-10-13 04:27:57,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 04:27:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 04:27:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:58,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:58,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:27:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:27:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:58,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:27:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:58,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:27:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:58,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:27:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:58,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:27:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:58,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:27:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:27:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:58,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:27:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:58,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:58,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:58,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:58,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 18 proven. 226 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 04:27:58,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926688254] [2020-10-13 04:27:58,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:58,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 04:27:58,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680221711] [2020-10-13 04:27:58,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 04:27:58,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:58,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 04:27:58,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-13 04:27:58,962 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand 28 states. [2020-10-13 04:28:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:02,534 INFO L93 Difference]: Finished difference Result 208 states and 231 transitions. [2020-10-13 04:28:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 04:28:02,535 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 107 [2020-10-13 04:28:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:02,536 INFO L225 Difference]: With dead ends: 208 [2020-10-13 04:28:02,536 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 04:28:02,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 04:28:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 04:28:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 155. [2020-10-13 04:28:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-13 04:28:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2020-10-13 04:28:02,569 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 107 [2020-10-13 04:28:02,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:02,569 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2020-10-13 04:28:02,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 04:28:02,570 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2020-10-13 04:28:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 04:28:02,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:02,571 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:02,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:28:02,571 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:02,572 INFO L82 PathProgramCache]: Analyzing trace with hash -724381828, now seen corresponding path program 34 times [2020-10-13 04:28:02,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:02,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425147875] [2020-10-13 04:28:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:04,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:04,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 04:28:04,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:04,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-13 04:28:04,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 04:28:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 04:28:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:05,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:05,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:28:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:05,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:28:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:28:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:28:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:28:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:05,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:28:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:05,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 04:28:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:05,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:28:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 04:28:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:05,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:05,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:05,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:05,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:05,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 18 proven. 243 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 04:28:05,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425147875] [2020-10-13 04:28:05,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:05,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 04:28:05,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073878662] [2020-10-13 04:28:05,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 04:28:05,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:05,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 04:28:05,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-13 04:28:05,577 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 28 states. [2020-10-13 04:28:09,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:09,401 INFO L93 Difference]: Finished difference Result 211 states and 235 transitions. [2020-10-13 04:28:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 04:28:09,403 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2020-10-13 04:28:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:09,404 INFO L225 Difference]: With dead ends: 211 [2020-10-13 04:28:09,404 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 04:28:09,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=217, Invalid=2975, Unknown=0, NotChecked=0, Total=3192 [2020-10-13 04:28:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 04:28:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 157. [2020-10-13 04:28:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-13 04:28:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2020-10-13 04:28:09,437 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 109 [2020-10-13 04:28:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:09,438 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2020-10-13 04:28:09,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 04:28:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2020-10-13 04:28:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 04:28:09,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:09,439 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:09,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:28:09,439 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:09,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1424111147, now seen corresponding path program 35 times [2020-10-13 04:28:09,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:09,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762243056] [2020-10-13 04:28:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:09,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:10,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:10,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 04:28:10,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-13 04:28:10,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 04:28:10,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:10,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 04:28:10,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:12,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:12,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:28:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:12,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:28:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:12,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:28:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:12,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:28:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:12,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:28:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:12,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:28:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:12,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:28:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:12,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:28:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:12,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:28:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:12,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:28:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:12,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:12,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 20 proven. 236 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 04:28:12,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762243056] [2020-10-13 04:28:12,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:12,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 04:28:12,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336817474] [2020-10-13 04:28:12,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 04:28:12,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:12,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 04:28:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:28:12,135 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand 27 states. [2020-10-13 04:28:13,248 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-13 04:28:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:15,876 INFO L93 Difference]: Finished difference Result 212 states and 237 transitions. [2020-10-13 04:28:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 04:28:15,877 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 111 [2020-10-13 04:28:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:15,878 INFO L225 Difference]: With dead ends: 212 [2020-10-13 04:28:15,879 INFO L226 Difference]: Without dead ends: 210 [2020-10-13 04:28:15,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=171, Invalid=2279, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 04:28:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-13 04:28:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2020-10-13 04:28:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-13 04:28:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2020-10-13 04:28:15,927 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 111 [2020-10-13 04:28:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:15,927 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2020-10-13 04:28:15,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 04:28:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2020-10-13 04:28:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 04:28:15,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:15,929 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:15,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:28:15,929 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:15,929 INFO L82 PathProgramCache]: Analyzing trace with hash 324376474, now seen corresponding path program 36 times [2020-10-13 04:28:15,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:15,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281238883] [2020-10-13 04:28:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:15,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:17,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:17,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 04:28:17,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-13 04:28:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 04:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 04:28:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:28:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:28:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:28:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:28:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:28:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:28:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:28:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:28:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:28:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:18,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:18,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:18,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:18,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 18 proven. 262 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 04:28:18,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281238883] [2020-10-13 04:28:18,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:18,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 04:28:18,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860120298] [2020-10-13 04:28:18,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 04:28:18,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:18,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 04:28:18,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:28:18,405 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand 27 states. [2020-10-13 04:28:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:21,877 INFO L93 Difference]: Finished difference Result 225 states and 250 transitions. [2020-10-13 04:28:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 04:28:21,884 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 111 [2020-10-13 04:28:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:21,886 INFO L225 Difference]: With dead ends: 225 [2020-10-13 04:28:21,886 INFO L226 Difference]: Without dead ends: 223 [2020-10-13 04:28:21,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=165, Invalid=2385, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 04:28:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-13 04:28:21,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 204. [2020-10-13 04:28:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-13 04:28:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2020-10-13 04:28:21,934 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 111 [2020-10-13 04:28:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:21,934 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2020-10-13 04:28:21,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 04:28:21,935 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2020-10-13 04:28:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 04:28:21,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:21,936 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:21,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:28:21,936 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:21,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1410269811, now seen corresponding path program 37 times [2020-10-13 04:28:21,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:21,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196788952] [2020-10-13 04:28:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:21,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 04:28:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1189 [2020-10-13 04:28:23,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 04:28:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 04:28:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:24,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:24,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:24,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:24,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:24,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:24,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:24,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:24,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:28:24,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:24,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:28:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:24,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:24,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:24,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:24,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:28:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:28:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:24,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:24,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:24,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:24,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:28:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:24,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:24,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:24,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:24,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:24,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:24,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:24,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:28:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:28:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:25,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:25,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:25,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:25,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:28:25,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:25,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:25,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:25,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:28:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:25,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:25,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:25,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:25,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:25,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:28:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:25,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:25,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:25,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:25,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:25,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:28:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:25,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:25,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:25,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:25,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:25,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:28:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:25,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:25,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:25,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:25,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:28:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:25,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:25,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:25,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:25,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:25,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:25,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:25,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 249 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 04:28:25,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196788952] [2020-10-13 04:28:25,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:25,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 04:28:25,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837723757] [2020-10-13 04:28:25,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 04:28:25,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:25,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 04:28:25,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:28:25,071 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand 29 states. [2020-10-13 04:28:26,068 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-13 04:28:29,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:29,551 INFO L93 Difference]: Finished difference Result 259 states and 294 transitions. [2020-10-13 04:28:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 04:28:29,552 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 113 [2020-10-13 04:28:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:29,555 INFO L225 Difference]: With dead ends: 259 [2020-10-13 04:28:29,555 INFO L226 Difference]: Without dead ends: 257 [2020-10-13 04:28:29,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=191, Invalid=2779, Unknown=0, NotChecked=0, Total=2970 [2020-10-13 04:28:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-13 04:28:29,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 204. [2020-10-13 04:28:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-13 04:28:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2020-10-13 04:28:29,589 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 113 [2020-10-13 04:28:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:29,589 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2020-10-13 04:28:29,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 04:28:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2020-10-13 04:28:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 04:28:29,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:29,591 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:29,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:28:29,591 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:29,591 INFO L82 PathProgramCache]: Analyzing trace with hash -2053862511, now seen corresponding path program 38 times [2020-10-13 04:28:29,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:29,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877990729] [2020-10-13 04:28:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:30,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:30,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 04:28:30,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:30,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-13 04:28:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 04:28:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 04:28:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:32,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:32,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:32,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:28:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:32,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:28:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:32,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:28:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:28:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:32,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:28:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:32,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:28:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:28:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:28:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:28:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:28:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:32,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:32,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:32,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 20 proven. 264 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 04:28:32,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877990729] [2020-10-13 04:28:32,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:32,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 04:28:32,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021235957] [2020-10-13 04:28:32,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 04:28:32,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:32,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 04:28:32,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:28:32,470 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand 29 states. [2020-10-13 04:28:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:36,487 INFO L93 Difference]: Finished difference Result 260 states and 295 transitions. [2020-10-13 04:28:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 04:28:36,488 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 115 [2020-10-13 04:28:36,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:36,490 INFO L225 Difference]: With dead ends: 260 [2020-10-13 04:28:36,490 INFO L226 Difference]: Without dead ends: 258 [2020-10-13 04:28:36,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2020-10-13 04:28:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-13 04:28:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 204. [2020-10-13 04:28:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-13 04:28:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2020-10-13 04:28:36,537 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 115 [2020-10-13 04:28:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:36,537 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2020-10-13 04:28:36,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 04:28:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2020-10-13 04:28:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 04:28:36,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:36,539 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:36,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:28:36,539 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:36,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1809597743, now seen corresponding path program 39 times [2020-10-13 04:28:36,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:36,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417871141] [2020-10-13 04:28:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:38,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 04:28:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1497 [2020-10-13 04:28:38,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 04:28:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 04:28:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:39,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:28:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:28:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:28:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:28:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:28:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:28:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 04:28:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:28:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 04:28:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 04:28:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:39,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:39,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:39,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 20 proven. 281 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 04:28:39,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417871141] [2020-10-13 04:28:39,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:39,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 04:28:39,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891025493] [2020-10-13 04:28:39,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 04:28:39,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:39,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 04:28:39,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2020-10-13 04:28:39,946 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand 30 states. [2020-10-13 04:28:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:44,949 INFO L93 Difference]: Finished difference Result 223 states and 248 transitions. [2020-10-13 04:28:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 04:28:44,951 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 117 [2020-10-13 04:28:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:44,953 INFO L225 Difference]: With dead ends: 223 [2020-10-13 04:28:44,953 INFO L226 Difference]: Without dead ends: 221 [2020-10-13 04:28:44,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=222, Invalid=3318, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 04:28:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-13 04:28:44,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 165. [2020-10-13 04:28:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 04:28:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2020-10-13 04:28:44,990 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 117 [2020-10-13 04:28:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:44,990 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2020-10-13 04:28:44,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 04:28:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2020-10-13 04:28:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 04:28:44,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:44,991 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:44,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:28:44,992 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:44,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1202203000, now seen corresponding path program 40 times [2020-10-13 04:28:44,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:44,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956478178] [2020-10-13 04:28:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:46,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:46,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 04:28:46,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-13 04:28:46,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 04:28:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 04:28:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:28:46,871 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-10-13 04:28:47,036 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-10-13 04:28:47,208 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2020-10-13 04:28:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:48,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:48,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:28:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:28:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:48,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:28:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:48,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:28:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:48,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:28:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:28:48,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:28:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:28:48,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:28:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:28:48,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:28:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:28:48,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:28:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:48,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:28:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:48,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 04:28:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:48,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:48,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:28:48,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 202 proven. 98 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 04:28:49,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956478178] [2020-10-13 04:28:49,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:49,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 04:28:49,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889401628] [2020-10-13 04:28:49,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 04:28:49,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:49,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 04:28:49,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2020-10-13 04:28:49,007 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 28 states. [2020-10-13 04:28:52,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:52,082 INFO L93 Difference]: Finished difference Result 220 states and 245 transitions. [2020-10-13 04:28:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 04:28:52,083 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 119 [2020-10-13 04:28:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:52,084 INFO L225 Difference]: With dead ends: 220 [2020-10-13 04:28:52,084 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 04:28:52,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=406, Invalid=2144, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 04:28:52,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 04:28:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-10-13 04:28:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 04:28:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2020-10-13 04:28:52,111 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 119 [2020-10-13 04:28:52,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:52,111 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2020-10-13 04:28:52,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 04:28:52,111 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2020-10-13 04:28:52,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 04:28:52,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:52,112 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:52,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:28:52,113 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:52,113 INFO L82 PathProgramCache]: Analyzing trace with hash -551809203, now seen corresponding path program 41 times [2020-10-13 04:28:52,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:52,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589141002] [2020-10-13 04:28:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:53,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:53,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 04:28:53,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-13 04:28:53,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 04:28:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-13 04:28:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:55,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:55,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:55,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:55,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:28:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:55,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:28:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:55,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:28:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:55,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:28:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:28:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:55,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:28:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:55,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:28:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:55,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:28:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:55,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:28:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:55,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 04:28:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:55,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:55,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:55,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:55,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 20 proven. 300 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 04:28:55,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589141002] [2020-10-13 04:28:55,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:55,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 04:28:55,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583575024] [2020-10-13 04:28:55,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 04:28:55,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:55,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 04:28:55,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2020-10-13 04:28:55,567 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand 30 states. [2020-10-13 04:29:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:00,431 INFO L93 Difference]: Finished difference Result 227 states and 252 transitions. [2020-10-13 04:29:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-13 04:29:00,433 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 119 [2020-10-13 04:29:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:00,435 INFO L225 Difference]: With dead ends: 227 [2020-10-13 04:29:00,435 INFO L226 Difference]: Without dead ends: 225 [2020-10-13 04:29:00,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=227, Invalid=3313, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 04:29:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-13 04:29:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2020-10-13 04:29:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-13 04:29:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2020-10-13 04:29:00,484 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 119 [2020-10-13 04:29:00,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:00,484 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2020-10-13 04:29:00,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 04:29:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2020-10-13 04:29:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 04:29:00,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:00,485 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:00,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 04:29:00,486 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:00,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1523421478, now seen corresponding path program 42 times [2020-10-13 04:29:00,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:00,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323057141] [2020-10-13 04:29:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:01,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:01,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 04:29:01,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-13 04:29:01,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 04:29:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:29:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 04:29:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:04,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:29:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:04,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:29:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:04,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:29:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:29:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:29:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:29:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:29:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:29:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:29:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:04,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:29:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:29:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:04,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:04,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:04,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:04,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 22 proven. 291 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 04:29:04,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323057141] [2020-10-13 04:29:04,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:04,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 04:29:04,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487217921] [2020-10-13 04:29:04,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 04:29:04,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:04,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 04:29:04,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:29:04,305 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand 29 states. [2020-10-13 04:29:05,575 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-13 04:29:06,018 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-13 04:29:06,417 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-13 04:29:06,799 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-13 04:29:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:10,197 INFO L93 Difference]: Finished difference Result 273 states and 309 transitions. [2020-10-13 04:29:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 04:29:10,199 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 121 [2020-10-13 04:29:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:10,200 INFO L225 Difference]: With dead ends: 273 [2020-10-13 04:29:10,200 INFO L226 Difference]: Without dead ends: 271 [2020-10-13 04:29:10,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=215, Invalid=3207, Unknown=0, NotChecked=0, Total=3422 [2020-10-13 04:29:10,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-13 04:29:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2020-10-13 04:29:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-13 04:29:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 287 transitions. [2020-10-13 04:29:10,252 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 287 transitions. Word has length 121 [2020-10-13 04:29:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:10,252 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 287 transitions. [2020-10-13 04:29:10,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 04:29:10,252 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 287 transitions. [2020-10-13 04:29:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 04:29:10,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:10,254 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:10,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 04:29:10,254 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:10,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2121152021, now seen corresponding path program 43 times [2020-10-13 04:29:10,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:10,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388039427] [2020-10-13 04:29:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 04:29:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1568 [2020-10-13 04:29:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 04:29:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:29:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 04:29:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:13,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:29:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:29:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:29:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:29:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:29:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:29:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:29:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:29:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:29:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:29:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:13,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:13,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:13,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 20 proven. 321 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 04:29:13,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388039427] [2020-10-13 04:29:13,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:13,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 04:29:13,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382289314] [2020-10-13 04:29:13,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 04:29:13,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:13,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 04:29:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:29:13,586 INFO L87 Difference]: Start difference. First operand 253 states and 287 transitions. Second operand 29 states. [2020-10-13 04:29:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:18,233 INFO L93 Difference]: Finished difference Result 285 states and 323 transitions. [2020-10-13 04:29:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 04:29:18,234 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 121 [2020-10-13 04:29:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:18,236 INFO L225 Difference]: With dead ends: 285 [2020-10-13 04:29:18,236 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 04:29:18,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=178, Invalid=2792, Unknown=0, NotChecked=0, Total=2970 [2020-10-13 04:29:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 04:29:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 216. [2020-10-13 04:29:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-13 04:29:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 240 transitions. [2020-10-13 04:29:18,277 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 240 transitions. Word has length 121 [2020-10-13 04:29:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:18,277 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 240 transitions. [2020-10-13 04:29:18,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 04:29:18,278 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 240 transitions. [2020-10-13 04:29:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 04:29:18,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:18,279 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:18,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 04:29:18,279 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:18,280 INFO L82 PathProgramCache]: Analyzing trace with hash 918494276, now seen corresponding path program 44 times [2020-10-13 04:29:18,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:18,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399363420] [2020-10-13 04:29:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:19,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:19,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 04:29:19,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:19,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-10-13 04:29:19,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 04:29:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:29:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 04:29:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:21,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:21,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:21,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:29:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:29:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:29:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:29:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:29:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:29:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:29:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:29:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:29:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:29:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:29:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 22 proven. 306 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 04:29:21,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399363420] [2020-10-13 04:29:21,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:21,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 04:29:21,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810923404] [2020-10-13 04:29:21,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 04:29:21,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:21,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 04:29:21,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2020-10-13 04:29:21,127 INFO L87 Difference]: Start difference. First operand 216 states and 240 transitions. Second operand 30 states. [2020-10-13 04:29:22,863 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-13 04:29:23,435 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 04:29:23,874 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-13 04:29:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:27,663 INFO L93 Difference]: Finished difference Result 275 states and 311 transitions. [2020-10-13 04:29:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 04:29:27,665 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 123 [2020-10-13 04:29:27,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:27,667 INFO L225 Difference]: With dead ends: 275 [2020-10-13 04:29:27,667 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 04:29:27,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=213, Invalid=3209, Unknown=0, NotChecked=0, Total=3422 [2020-10-13 04:29:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 04:29:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 216. [2020-10-13 04:29:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-13 04:29:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 240 transitions. [2020-10-13 04:29:27,720 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 240 transitions. Word has length 123 [2020-10-13 04:29:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:27,721 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 240 transitions. [2020-10-13 04:29:27,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 04:29:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 240 transitions. [2020-10-13 04:29:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 04:29:27,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:27,722 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:27,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 04:29:27,723 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash -595961886, now seen corresponding path program 45 times [2020-10-13 04:29:27,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:27,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980079670] [2020-10-13 04:29:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:27,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:29,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 04:29:29,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1260 [2020-10-13 04:29:29,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 04:29:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:29:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 04:29:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:31,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:31,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:29:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:29:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:31,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:29:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 04:29:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:29:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:29:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 04:29:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:29:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 04:29:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 04:29:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 04:29:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:31,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:31,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 22 proven. 323 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 04:29:31,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980079670] [2020-10-13 04:29:31,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:31,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 04:29:31,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412827786] [2020-10-13 04:29:31,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 04:29:31,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:31,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 04:29:31,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:29:31,371 INFO L87 Difference]: Start difference. First operand 216 states and 240 transitions. Second operand 31 states. [2020-10-13 04:29:33,692 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-13 04:29:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:37,789 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2020-10-13 04:29:37,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-13 04:29:37,791 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 125 [2020-10-13 04:29:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:37,793 INFO L225 Difference]: With dead ends: 234 [2020-10-13 04:29:37,793 INFO L226 Difference]: Without dead ends: 232 [2020-10-13 04:29:37,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=228, Invalid=3554, Unknown=0, NotChecked=0, Total=3782 [2020-10-13 04:29:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-13 04:29:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 173. [2020-10-13 04:29:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-13 04:29:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 186 transitions. [2020-10-13 04:29:37,834 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 186 transitions. Word has length 125 [2020-10-13 04:29:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:37,835 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 186 transitions. [2020-10-13 04:29:37,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 04:29:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 186 transitions. [2020-10-13 04:29:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 04:29:37,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:37,837 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:37,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 04:29:37,837 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:37,838 INFO L82 PathProgramCache]: Analyzing trace with hash 5579776, now seen corresponding path program 46 times [2020-10-13 04:29:37,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:37,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8446646] [2020-10-13 04:29:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:39,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:39,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 04:29:39,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1350 [2020-10-13 04:29:39,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 04:29:39,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:29:39,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 04:29:39,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:41,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:41,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:29:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:29:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:29:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:29:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:29:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:29:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:29:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:29:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:29:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 04:29:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 04:29:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:41,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:41,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:41,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 22 proven. 342 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 04:29:41,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8446646] [2020-10-13 04:29:41,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:41,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 04:29:41,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736105890] [2020-10-13 04:29:41,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 04:29:41,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:41,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 04:29:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=929, Unknown=0, NotChecked=0, Total=992 [2020-10-13 04:29:41,470 INFO L87 Difference]: Start difference. First operand 173 states and 186 transitions. Second operand 32 states. [2020-10-13 04:29:44,114 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-13 04:29:48,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:48,555 INFO L93 Difference]: Finished difference Result 237 states and 263 transitions. [2020-10-13 04:29:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 04:29:48,557 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 127 [2020-10-13 04:29:48,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:48,559 INFO L225 Difference]: With dead ends: 237 [2020-10-13 04:29:48,559 INFO L226 Difference]: Without dead ends: 235 [2020-10-13 04:29:48,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=237, Invalid=3795, Unknown=0, NotChecked=0, Total=4032 [2020-10-13 04:29:48,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-13 04:29:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 226. [2020-10-13 04:29:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-13 04:29:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2020-10-13 04:29:48,600 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 127 [2020-10-13 04:29:48,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:48,601 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2020-10-13 04:29:48,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 04:29:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2020-10-13 04:29:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 04:29:48,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:48,602 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:48,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 04:29:48,603 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:48,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1693957337, now seen corresponding path program 47 times [2020-10-13 04:29:48,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:48,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526551332] [2020-10-13 04:29:48,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:49,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:49,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 04:29:49,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:49,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-13 04:29:49,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 04:29:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:29:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 04:29:49,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:50,137 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-13 04:29:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:52,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:52,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:29:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:29:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:29:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:52,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:29:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:52,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:29:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:29:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:29:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:29:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:29:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:29:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:52,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:29:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:29:52,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 04:29:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:52,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:52,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:52,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:52,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:52,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:52,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 24 proven. 337 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 04:29:52,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526551332] [2020-10-13 04:29:52,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:52,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 04:29:52,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251582615] [2020-10-13 04:29:52,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 04:29:52,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:52,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 04:29:52,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2020-10-13 04:29:52,486 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand 30 states. [2020-10-13 04:29:53,516 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-13 04:29:54,014 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-13 04:29:54,431 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-13 04:29:54,858 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-13 04:29:55,275 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-13 04:29:55,590 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-13 04:29:59,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:59,524 INFO L93 Difference]: Finished difference Result 289 states and 327 transitions. [2020-10-13 04:29:59,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 04:29:59,526 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 129 [2020-10-13 04:29:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:59,528 INFO L225 Difference]: With dead ends: 289 [2020-10-13 04:29:59,528 INFO L226 Difference]: Without dead ends: 287 [2020-10-13 04:29:59,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=185, Invalid=2895, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 04:29:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-13 04:29:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 265. [2020-10-13 04:29:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 04:29:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 300 transitions. [2020-10-13 04:29:59,599 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 300 transitions. Word has length 129 [2020-10-13 04:29:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:59,600 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 300 transitions. [2020-10-13 04:29:59,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 04:29:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 300 transitions. [2020-10-13 04:29:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 04:29:59,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:59,602 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:59,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 04:29:59,602 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:59,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1733468002, now seen corresponding path program 48 times [2020-10-13 04:29:59,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:59,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773907314] [2020-10-13 04:29:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking...