/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-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 19:43:34,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 19:43:34,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 19:43:34,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 19:43:34,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 19:43:34,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 19:43:34,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 19:43:34,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 19:43:34,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 19:43:34,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 19:43:34,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 19:43:34,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 19:43:34,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 19:43:34,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 19:43:34,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 19:43:34,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 19:43:34,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 19:43:34,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 19:43:34,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 19:43:34,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 19:43:34,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 19:43:34,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 19:43:34,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 19:43:34,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 19:43:34,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 19:43:34,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 19:43:34,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 19:43:34,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 19:43:34,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 19:43:34,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 19:43:34,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 19:43:34,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 19:43:34,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 19:43:34,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 19:43:34,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 19:43:34,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 19:43:34,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 19:43:34,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 19:43:34,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 19:43:34,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 19:43:34,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 19:43:34,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-10-13 19:43:34,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 19:43:34,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 19:43:34,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 19:43:34,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 19:43:34,660 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 19:43:34,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 19:43:34,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 19:43:34,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 19:43:34,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 19:43:34,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 19:43:34,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 19:43:34,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 19:43:34,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 19:43:34,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 19:43:34,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 19:43:34,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 19:43:34,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 19:43:34,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 19:43:34,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 19:43:34,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 19:43:34,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 19:43:34,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 19:43:34,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 19:43:34,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 19:43:34,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 19:43:34,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 19:43:34,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-13 19:43:34,666 INFO L138 SettingsManager]: * To the following directory=dump/ 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 19:43:34,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 19:43:34,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 19:43:34,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 19:43:34,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 19:43:34,975 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 19:43:34,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-10-13 19:43:35,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c41fabe17/543895e7d557408f8d5368f5697bb76d/FLAGe6d3ae4b2 [2020-10-13 19:43:35,767 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 19:43:35,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-10-13 19:43:35,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c41fabe17/543895e7d557408f8d5368f5697bb76d/FLAGe6d3ae4b2 [2020-10-13 19:43:35,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c41fabe17/543895e7d557408f8d5368f5697bb76d [2020-10-13 19:43:35,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 19:43:35,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 19:43:35,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 19:43:35,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 19:43:35,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 19:43:35,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:35" (1/1) ... [2020-10-13 19:43:35,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4e7937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:35, skipping insertion in model container [2020-10-13 19:43:35,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:35" (1/1) ... [2020-10-13 19:43:35,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 19:43:35,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 19:43:36,544 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2539] [2020-10-13 19:43:36,545 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2540-2541] [2020-10-13 19:43:37,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 19:43:37,108 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 19:43:37,183 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2539] [2020-10-13 19:43:37,184 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2540-2541] [2020-10-13 19:43:37,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 19:43:37,703 INFO L208 MainTranslator]: Completed translation [2020-10-13 19:43:37,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37 WrapperNode [2020-10-13 19:43:37,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 19:43:37,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 19:43:37,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 19:43:37,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 19:43:37,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (1/1) ... [2020-10-13 19:43:37,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (1/1) ... [2020-10-13 19:43:37,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (1/1) ... [2020-10-13 19:43:37,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (1/1) ... [2020-10-13 19:43:37,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (1/1) ... [2020-10-13 19:43:37,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (1/1) ... [2020-10-13 19:43:38,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (1/1) ... [2020-10-13 19:43:38,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 19:43:38,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 19:43:38,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 19:43:38,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 19:43:38,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (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 19:43:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 19:43:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 19:43:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-13 19:43:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-10-13 19:43:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-10-13 19:43:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2020-10-13 19:43:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2020-10-13 19:43:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2020-10-13 19:43:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2020-10-13 19:43:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2020-10-13 19:43:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2020-10-13 19:43:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2020-10-13 19:43:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2020-10-13 19:43:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2020-10-13 19:43:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2020-10-13 19:43:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-10-13 19:43:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-10-13 19:43:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 19:43:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-13 19:43:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-13 19:43:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-13 19:43:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-13 19:43:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-13 19:43:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-13 19:43:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-10-13 19:43:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-10-13 19:43:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-10-13 19:43:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-10-13 19:43:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2020-10-13 19:43:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2020-10-13 19:43:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2020-10-13 19:43:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2020-10-13 19:43:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2020-10-13 19:43:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2020-10-13 19:43:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2020-10-13 19:43:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2020-10-13 19:43:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2020-10-13 19:43:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2020-10-13 19:43:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2020-10-13 19:43:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_calibrate [2020-10-13 19:43:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2020-10-13 19:43:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_handler [2020-10-13 19:43:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_interval [2020-10-13 19:43:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2020-10-13 19:43:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2020-10-13 19:43:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2020-10-13 19:43:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2020-10-13 19:43:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_open [2020-10-13 19:43:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_close [2020-10-13 19:43:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_calibrate_timer [2020-10-13 19:43:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_name [2020-10-13 19:43:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_device [2020-10-13 19:43:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_masks [2020-10-13 19:43:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_port [2020-10-13 19:43:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_connect [2020-10-13 19:43:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2020-10-13 19:43:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_parse_options [2020-10-13 19:43:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init [2020-10-13 19:43:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_exit [2020-10-13 19:43:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_gameport_driver_1 [2020-10-13 19:43:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 19:43:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-13 19:43:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-10-13 19:43:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-10-13 19:43:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-10-13 19:43:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-10-13 19:43:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-10-13 19:43:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-10-13 19:43:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-10-13 19:43:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_driver [2020-10-13 19:43:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2020-10-13 19:43:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2020-10-13 19:43:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2020-10-13 19:43:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_start_polling [2020-10-13 19:43:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_stop_polling [2020-10-13 19:43:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_driver [2020-10-13 19:43:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2020-10-13 19:43:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2020-10-13 19:43:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2020-10-13 19:43:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2020-10-13 19:43:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2020-10-13 19:43:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-10-13 19:43:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_bind_1 [2020-10-13 19:43:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-13 19:43:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-13 19:43:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-10-13 19:43:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-10-13 19:43:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-10-13 19:43:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-13 19:43:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2020-10-13 19:43:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2020-10-13 19:43:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2020-10-13 19:43:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2020-10-13 19:43:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-13 19:43:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 19:43:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 19:43:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-10-13 19:43:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2020-10-13 19:43:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2020-10-13 19:43:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2020-10-13 19:43:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2020-10-13 19:43:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-13 19:43:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2020-10-13 19:43:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-13 19:43:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-13 19:43:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-13 19:43:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2020-10-13 19:43:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2020-10-13 19:43:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 19:43:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2020-10-13 19:43:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2020-10-13 19:43:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2020-10-13 19:43:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2020-10-13 19:43:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2020-10-13 19:43:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2020-10-13 19:43:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2020-10-13 19:43:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-10-13 19:43:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-10-13 19:43:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-13 19:43:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-10-13 19:43:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-13 19:43:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-10-13 19:43:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 19:43:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 19:43:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 19:43:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 19:43:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 19:43:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 19:43:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-13 19:43:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 19:43:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-13 19:43:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 19:43:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-13 19:43:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-13 19:43:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-13 19:43:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-13 19:43:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-10-13 19:43:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_gameport_driver_1 [2020-10-13 19:43:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2020-10-13 19:43:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-10-13 19:43:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-10-13 19:43:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-10-13 19:43:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-10-13 19:43:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 19:43:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2020-10-13 19:43:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2020-10-13 19:43:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2020-10-13 19:43:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2020-10-13 19:43:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2020-10-13 19:43:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2020-10-13 19:43:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2020-10-13 19:43:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2020-10-13 19:43:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2020-10-13 19:43:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2020-10-13 19:43:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2020-10-13 19:43:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2020-10-13 19:43:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2020-10-13 19:43:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2020-10-13 19:43:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2020-10-13 19:43:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_driver [2020-10-13 19:43:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_driver [2020-10-13 19:43:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2020-10-13 19:43:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-13 19:43:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 19:43:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2020-10-13 19:43:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-10-13 19:43:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2020-10-13 19:43:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-10-13 19:43:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_calibrate [2020-10-13 19:43:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2020-10-13 19:43:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_handler [2020-10-13 19:43:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_interval [2020-10-13 19:43:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 19:43:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_start_polling [2020-10-13 19:43:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_stop_polling [2020-10-13 19:43:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2020-10-13 19:43:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2020-10-13 19:43:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 19:43:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 19:43:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2020-10-13 19:43:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2020-10-13 19:43:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure analog_open [2020-10-13 19:43:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure analog_close [2020-10-13 19:43:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure analog_calibrate_timer [2020-10-13 19:43:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure analog_name [2020-10-13 19:43:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_device [2020-10-13 19:43:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_masks [2020-10-13 19:43:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_port [2020-10-13 19:43:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure analog_connect [2020-10-13 19:43:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2020-10-13 19:43:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure analog_parse_options [2020-10-13 19:43:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init [2020-10-13 19:43:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure analog_exit [2020-10-13 19:43:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-13 19:43:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-13 19:43:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-10-13 19:43:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_bind_1 [2020-10-13 19:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 19:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-10-13 19:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-10-13 19:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-10-13 19:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-10-13 19:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-10-13 19:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-10-13 19:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 19:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 19:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-13 19:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 19:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 19:43:39,170 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-13 19:43:40,803 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 19:43:40,804 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 19:43:40,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:40 BoogieIcfgContainer [2020-10-13 19:43:40,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 19:43:40,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 19:43:40,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 19:43:40,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 19:43:40,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:43:35" (1/3) ... [2020-10-13 19:43:40,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603fb362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:40, skipping insertion in model container [2020-10-13 19:43:40,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:37" (2/3) ... [2020-10-13 19:43:40,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603fb362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:40, skipping insertion in model container [2020-10-13 19:43:40,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:40" (3/3) ... [2020-10-13 19:43:40,823 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-10-13 19:43:40,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 19:43:40,847 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 19:43:40,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 19:43:40,896 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 19:43:40,897 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 19:43:40,897 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 19:43:40,897 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 19:43:40,897 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 19:43:40,897 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 19:43:40,897 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 19:43:40,898 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 19:43:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2020-10-13 19:43:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 19:43:40,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:43:40,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:43:40,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:43:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:43:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2058672228, now seen corresponding path program 1 times [2020-10-13 19:43:40,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:43:40,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481935866] [2020-10-13 19:43:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:43:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:43,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:43,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 19:43:43,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:43:43,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1706 [2020-10-13 19:43:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:43:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 19:43:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 19:43:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 19:43:43,855 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:43:43,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:43:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:43,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:43,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:43,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:43:43,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 19:43:43,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:43:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:43:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:44,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:44,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:43:44,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:43:44,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:43:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:43:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:44,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:44,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:43:44,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:44,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:43:44,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:43:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:44,083 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 19:43:44,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481935866] [2020-10-13 19:43:44,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:43:44,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 19:43:44,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585437623] [2020-10-13 19:43:44,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 19:43:44,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:43:44,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 19:43:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 19:43:44,113 INFO L87 Difference]: Start difference. First operand 791 states. Second operand 5 states. [2020-10-13 19:43:45,306 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-10-13 19:43:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:43:53,202 INFO L93 Difference]: Finished difference Result 1648 states and 2166 transitions. [2020-10-13 19:43:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 19:43:53,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-13 19:43:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:43:53,236 INFO L225 Difference]: With dead ends: 1648 [2020-10-13 19:43:53,236 INFO L226 Difference]: Without dead ends: 834 [2020-10-13 19:43:53,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 19:43:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-13 19:43:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-10-13 19:43:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-10-13 19:43:53,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1039 transitions. [2020-10-13 19:43:53,457 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1039 transitions. Word has length 30 [2020-10-13 19:43:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:43:53,458 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1039 transitions. [2020-10-13 19:43:53,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 19:43:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1039 transitions. [2020-10-13 19:43:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 19:43:53,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:43:53,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:43:53,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 19:43:53,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:43:53,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:43:53,463 INFO L82 PathProgramCache]: Analyzing trace with hash 229024885, now seen corresponding path program 1 times [2020-10-13 19:43:53,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:43:53,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495521944] [2020-10-13 19:43:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:43:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:53,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:55,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:55,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 19:43:55,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:43:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1844 [2020-10-13 19:43:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:43:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:43:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 19:43:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:43:55,840 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:43:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:43:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:55,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:43:55,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 19:43:55,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:43:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:43:55,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:43:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:56,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:56,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:43:56,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:56,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:43:56,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:43:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:56,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:43:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:56,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:56,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:43:56,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:43:56,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:43:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 19:43:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:43:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 19:43:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 19:43:56,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:43:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:43:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 19:43:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:56,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:43:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:56,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:56,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:43:56,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 19:43:56,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:43:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:43:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 19:43:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 19:43:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:56,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:56,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:43:56,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:43:56,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:43:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:56,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:56,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 19:43:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:56,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:56,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:43:56,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 19:43:56,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:43:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:56,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:43:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:43:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:43:56,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:43:56,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:43:56,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:43:56,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:43:56,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:43:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:43:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:43:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:43:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:43:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:43:56,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495521944] [2020-10-13 19:43:56,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:43:56,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 19:43:56,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467440175] [2020-10-13 19:43:56,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 19:43:56,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:43:56,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 19:43:56,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 19:43:56,286 INFO L87 Difference]: Start difference. First operand 803 states and 1039 transitions. Second operand 7 states. [2020-10-13 19:44:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:44:02,591 INFO L93 Difference]: Finished difference Result 1640 states and 2144 transitions. [2020-10-13 19:44:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 19:44:02,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 19:44:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:44:02,600 INFO L225 Difference]: With dead ends: 1640 [2020-10-13 19:44:02,600 INFO L226 Difference]: Without dead ends: 864 [2020-10-13 19:44:02,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 19:44:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-10-13 19:44:02,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 807. [2020-10-13 19:44:02,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-10-13 19:44:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1045 transitions. [2020-10-13 19:44:02,728 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1045 transitions. Word has length 65 [2020-10-13 19:44:02,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:44:02,729 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1045 transitions. [2020-10-13 19:44:02,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 19:44:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1045 transitions. [2020-10-13 19:44:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 19:44:02,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:44:02,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:44:02,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 19:44:02,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:44:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:44:02,733 INFO L82 PathProgramCache]: Analyzing trace with hash 780245369, now seen corresponding path program 1 times [2020-10-13 19:44:02,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:44:02,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762678002] [2020-10-13 19:44:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:44:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:04,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:04,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 19:44:04,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:44:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2043 [2020-10-13 19:44:04,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:44:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:44:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:44:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:05,241 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:44:05,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:44:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:05,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:05,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 19:44:05,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:44:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:44:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:05,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:05,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:44:05,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:05,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:44:05,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:05,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:05,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:44:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:05,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:05,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 19:44:05,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 19:44:05,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:44:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:44:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:44:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:05,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:05,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 19:44:05,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 19:44:05,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:44:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:44:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:44:05,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:05,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 19:44:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:05,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:05,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:05,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:05,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:05,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:44:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:05,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 19:44:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:05,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:05,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:05,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:44:05,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 19:44:05,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:44:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:05,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:05,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:05,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:05,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:05,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:44:05,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762678002] [2020-10-13 19:44:05,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:44:05,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 19:44:05,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687757987] [2020-10-13 19:44:05,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 19:44:05,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:44:05,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 19:44:05,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 19:44:05,575 INFO L87 Difference]: Start difference. First operand 807 states and 1045 transitions. Second operand 8 states. [2020-10-13 19:44:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:44:13,504 INFO L93 Difference]: Finished difference Result 1674 states and 2194 transitions. [2020-10-13 19:44:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 19:44:13,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-13 19:44:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:44:13,512 INFO L225 Difference]: With dead ends: 1674 [2020-10-13 19:44:13,512 INFO L226 Difference]: Without dead ends: 894 [2020-10-13 19:44:13,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 19:44:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-13 19:44:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 837. [2020-10-13 19:44:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-10-13 19:44:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1089 transitions. [2020-10-13 19:44:13,636 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1089 transitions. Word has length 67 [2020-10-13 19:44:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:44:13,636 INFO L479 AbstractCegarLoop]: Abstraction has 837 states and 1089 transitions. [2020-10-13 19:44:13,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 19:44:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1089 transitions. [2020-10-13 19:44:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 19:44:13,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:44:13,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:44:13,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 19:44:13,639 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:44:13,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:44:13,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2072814211, now seen corresponding path program 2 times [2020-10-13 19:44:13,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:44:13,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186581683] [2020-10-13 19:44:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:44:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:15,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:15,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 19:44:15,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:44:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2162 [2020-10-13 19:44:15,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:44:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:44:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 19:44:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:16,250 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:44:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:44:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:16,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:16,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:16,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 19:44:16,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:44:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:16,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:16,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 19:44:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:44:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:16,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:16,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:44:16,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:16,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:44:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:16,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:16,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 19:44:16,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 19:44:16,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:44:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:44:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 19:44:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:16,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:16,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 19:44:16,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:16,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 19:44:16,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:44:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:44:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 19:44:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 19:44:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:16,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:16,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:16,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:44:16,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:44:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:16,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 19:44:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:16,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:16,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:16,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:44:16,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 19:44:16,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:44:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:16,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:16,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:16,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:16,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:16,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:16,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:16,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:44:16,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186581683] [2020-10-13 19:44:16,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:44:16,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 19:44:16,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431655363] [2020-10-13 19:44:16,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 19:44:16,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:44:16,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 19:44:16,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 19:44:16,708 INFO L87 Difference]: Start difference. First operand 837 states and 1089 transitions. Second operand 9 states. [2020-10-13 19:44:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:44:24,303 INFO L93 Difference]: Finished difference Result 1734 states and 2282 transitions. [2020-10-13 19:44:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 19:44:24,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-13 19:44:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:44:24,311 INFO L225 Difference]: With dead ends: 1734 [2020-10-13 19:44:24,311 INFO L226 Difference]: Without dead ends: 924 [2020-10-13 19:44:24,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 19:44:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-10-13 19:44:24,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 867. [2020-10-13 19:44:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-13 19:44:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1133 transitions. [2020-10-13 19:44:24,423 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1133 transitions. Word has length 69 [2020-10-13 19:44:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:44:24,424 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1133 transitions. [2020-10-13 19:44:24,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 19:44:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1133 transitions. [2020-10-13 19:44:24,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 19:44:24,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:44:24,426 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:44:24,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 19:44:24,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:44:24,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:44:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash 621031553, now seen corresponding path program 3 times [2020-10-13 19:44:24,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:44:24,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668815613] [2020-10-13 19:44:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:44:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:26,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:26,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 19:44:26,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:44:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2270 [2020-10-13 19:44:26,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 19:44:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:44:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 19:44:26,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:27,181 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:44:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:44:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:27,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:27,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:27,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 19:44:27,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:27,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:44:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:44:27,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:27,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:44:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:27,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:27,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:27,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:44:27,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:27,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:27,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:27,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:44:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:27,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:27,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 19:44:27,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 19:44:27,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 19:44:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:44:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 19:44:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:27,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:27,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:44:27,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 19:44:27,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 19:44:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:44:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 19:44:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 19:44:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:27,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:27,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:27,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:27,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:44:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:27,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:27,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 19:44:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:27,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:27,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:27,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:44:27,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:44:27,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:44:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:27,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:27,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:27,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:27,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:27,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:27,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:44:27,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:44:27,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668815613] [2020-10-13 19:44:27,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:44:27,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 19:44:27,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204406028] [2020-10-13 19:44:27,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 19:44:27,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:44:27,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 19:44:27,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 19:44:27,608 INFO L87 Difference]: Start difference. First operand 867 states and 1133 transitions. Second operand 10 states. [2020-10-13 19:44:33,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:44:33,397 INFO L93 Difference]: Finished difference Result 1794 states and 2370 transitions. [2020-10-13 19:44:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 19:44:33,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-13 19:44:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:44:33,403 INFO L225 Difference]: With dead ends: 1794 [2020-10-13 19:44:33,404 INFO L226 Difference]: Without dead ends: 954 [2020-10-13 19:44:33,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 19:44:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-10-13 19:44:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 897. [2020-10-13 19:44:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-13 19:44:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1177 transitions. [2020-10-13 19:44:33,514 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1177 transitions. Word has length 71 [2020-10-13 19:44:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:44:33,515 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1177 transitions. [2020-10-13 19:44:33,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 19:44:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1177 transitions. [2020-10-13 19:44:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 19:44:33,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:44:33,516 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:44:33,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 19:44:33,517 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:44:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:44:33,517 INFO L82 PathProgramCache]: Analyzing trace with hash -458468731, now seen corresponding path program 4 times [2020-10-13 19:44:33,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:44:33,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656341133] [2020-10-13 19:44:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:44:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:35,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:35,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 19:44:35,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:44:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-13 19:44:35,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 19:44:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:44:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 19:44:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:36,142 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:44:36,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:44:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:36,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:36,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:36,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 19:44:36,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:44:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:36,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:36,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:36,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:44:36,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:44:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:36,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:36,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:36,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:44:36,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:36,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:44:36,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:44:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:36,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:36,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 19:44:36,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 19:44:36,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 19:44:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:44:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 19:44:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:44:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:36,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:36,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 19:44:36,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 19:44:36,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 19:44:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:44:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 19:44:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:36,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 19:44:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:36,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:36,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:44:36,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:44:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 19:44:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:36,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:36,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:44:36,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:44:36,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:44:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:36,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:36,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:44:36,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:44:36,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656341133] [2020-10-13 19:44:36,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:44:36,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 19:44:36,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270774784] [2020-10-13 19:44:36,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 19:44:36,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:44:36,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 19:44:36,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 19:44:36,645 INFO L87 Difference]: Start difference. First operand 897 states and 1177 transitions. Second operand 11 states. [2020-10-13 19:44:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:44:44,922 INFO L93 Difference]: Finished difference Result 1854 states and 2458 transitions. [2020-10-13 19:44:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 19:44:44,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-10-13 19:44:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:44:44,937 INFO L225 Difference]: With dead ends: 1854 [2020-10-13 19:44:44,937 INFO L226 Difference]: Without dead ends: 984 [2020-10-13 19:44:44,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 19:44:44,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-10-13 19:44:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 927. [2020-10-13 19:44:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-10-13 19:44:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1221 transitions. [2020-10-13 19:44:45,129 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1221 transitions. Word has length 73 [2020-10-13 19:44:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:44:45,134 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1221 transitions. [2020-10-13 19:44:45,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 19:44:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1221 transitions. [2020-10-13 19:44:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 19:44:45,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:44:45,136 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:44:45,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 19:44:45,137 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:44:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:44:45,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1523843977, now seen corresponding path program 5 times [2020-10-13 19:44:45,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:44:45,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369646308] [2020-10-13 19:44:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:44:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:47,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:47,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 19:44:47,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:44:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2450 [2020-10-13 19:44:47,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 19:44:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:44:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 19:44:47,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,071 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:44:48,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:44:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:48,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:48,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:48,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 19:44:48,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:44:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:48,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:48,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:48,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:44:48,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:44:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:48,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:48,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:44:48,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:44:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:44:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:48,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:48,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 19:44:48,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 19:44:48,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 19:44:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:44:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 19:44:48,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:48,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 19:44:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 19:44:48,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 19:44:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:44:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 19:44:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 19:44:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:48,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:44:48,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:44:48,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 19:44:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:48,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:48,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:44:48,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:48,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:44:48,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:44:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:44:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:48,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:48,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:48,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:44:48,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:44:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:44:48,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:44:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:44:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:44:48,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:44:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:44:48,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369646308] [2020-10-13 19:44:48,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:44:48,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 19:44:48,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556487496] [2020-10-13 19:44:48,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 19:44:48,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:44:48,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 19:44:48,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-13 19:44:48,484 INFO L87 Difference]: Start difference. First operand 927 states and 1221 transitions. Second operand 12 states. [2020-10-13 19:44:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:44:57,089 INFO L93 Difference]: Finished difference Result 1914 states and 2546 transitions. [2020-10-13 19:44:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 19:44:57,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-13 19:44:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:44:57,097 INFO L225 Difference]: With dead ends: 1914 [2020-10-13 19:44:57,097 INFO L226 Difference]: Without dead ends: 1014 [2020-10-13 19:44:57,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 19:44:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-13 19:44:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 957. [2020-10-13 19:44:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-10-13 19:44:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1265 transitions. [2020-10-13 19:44:57,213 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1265 transitions. Word has length 75 [2020-10-13 19:44:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:44:57,214 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1265 transitions. [2020-10-13 19:44:57,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 19:44:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1265 transitions. [2020-10-13 19:44:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 19:44:57,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:44:57,215 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:44:57,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 19:44:57,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:44:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:44:57,216 INFO L82 PathProgramCache]: Analyzing trace with hash -439123059, now seen corresponding path program 6 times [2020-10-13 19:44:57,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:44:57,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288082866] [2020-10-13 19:44:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:44:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:44:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:44:59,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:44:59,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 19:44:59,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:44:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2488 [2020-10-13 19:44:59,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:44:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 19:44:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:44:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 19:44:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:00,306 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:45:00,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:45:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:00,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:00,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:00,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:00,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:00,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 19:45:00,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:45:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:45:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:00,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:00,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:00,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:45:00,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:00,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:00,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:45:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:00,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:00,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:45:00,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:45:00,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:00,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:00,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:00,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:45:00,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:45:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:00,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:00,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:00,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 19:45:00,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:00,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 19:45:00,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 19:45:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:45:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 19:45:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:45:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:00,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:00,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 19:45:00,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:00,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 19:45:00,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 19:45:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:45:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 19:45:00,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:45:00,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:45:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:00,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:00,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:00,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:00,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:45:00,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:45:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 19:45:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:00,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:00,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:45:00,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:00,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:45:00,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:00,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:45:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:00,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:45:00,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:00,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:00,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:00,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:45:00,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:00,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:45:00,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288082866] [2020-10-13 19:45:00,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:45:00,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 19:45:00,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24618649] [2020-10-13 19:45:00,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 19:45:00,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:45:00,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 19:45:00,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-13 19:45:00,991 INFO L87 Difference]: Start difference. First operand 957 states and 1265 transitions. Second operand 13 states. [2020-10-13 19:45:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:45:09,887 INFO L93 Difference]: Finished difference Result 1974 states and 2634 transitions. [2020-10-13 19:45:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 19:45:09,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-10-13 19:45:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:45:09,896 INFO L225 Difference]: With dead ends: 1974 [2020-10-13 19:45:09,896 INFO L226 Difference]: Without dead ends: 1044 [2020-10-13 19:45:09,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-13 19:45:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-10-13 19:45:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 987. [2020-10-13 19:45:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2020-10-13 19:45:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1309 transitions. [2020-10-13 19:45:10,013 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1309 transitions. Word has length 77 [2020-10-13 19:45:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:45:10,014 INFO L479 AbstractCegarLoop]: Abstraction has 987 states and 1309 transitions. [2020-10-13 19:45:10,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 19:45:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1309 transitions. [2020-10-13 19:45:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 19:45:10,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:45:10,015 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:45:10,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 19:45:10,016 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:45:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:45:10,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1359801711, now seen corresponding path program 7 times [2020-10-13 19:45:10,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:45:10,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397837051] [2020-10-13 19:45:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:45:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:11,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:12,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:12,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 19:45:12,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:45:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2671 [2020-10-13 19:45:12,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 19:45:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:45:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 19:45:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,311 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:45:13,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:45:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:13,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 19:45:13,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:45:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:13,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:13,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:13,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:45:13,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:45:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:13,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:45:13,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:45:13,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:45:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:13,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 19:45:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 19:45:13,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 19:45:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:45:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 19:45:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:13,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:13,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:13,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 19:45:13,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 19:45:13,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 19:45:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:45:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 19:45:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 19:45:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:13,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:13,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:13,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:13,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:45:13,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:13,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:45:13,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 19:45:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:13,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:13,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:45:13,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:13,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:45:13,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:45:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:13,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:13,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:13,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:13,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:45:13,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:45:13,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397837051] [2020-10-13 19:45:13,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:45:13,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 19:45:13,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783503115] [2020-10-13 19:45:13,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 19:45:13,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:45:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 19:45:13,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-13 19:45:13,802 INFO L87 Difference]: Start difference. First operand 987 states and 1309 transitions. Second operand 14 states. [2020-10-13 19:45:23,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:45:23,589 INFO L93 Difference]: Finished difference Result 2034 states and 2722 transitions. [2020-10-13 19:45:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 19:45:23,592 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2020-10-13 19:45:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:45:23,597 INFO L225 Difference]: With dead ends: 2034 [2020-10-13 19:45:23,597 INFO L226 Difference]: Without dead ends: 1074 [2020-10-13 19:45:23,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-13 19:45:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-10-13 19:45:23,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1017. [2020-10-13 19:45:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-10-13 19:45:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1353 transitions. [2020-10-13 19:45:23,735 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1353 transitions. Word has length 79 [2020-10-13 19:45:23,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:45:23,735 INFO L479 AbstractCegarLoop]: Abstraction has 1017 states and 1353 transitions. [2020-10-13 19:45:23,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 19:45:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1353 transitions. [2020-10-13 19:45:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 19:45:23,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:45:23,737 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:45:23,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 19:45:23,737 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:45:23,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:45:23,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1368723307, now seen corresponding path program 8 times [2020-10-13 19:45:23,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:45:23,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419073446] [2020-10-13 19:45:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:45:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:23,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:23,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:26,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 19:45:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:45:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2328 [2020-10-13 19:45:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 19:45:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:45:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 19:45:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:26,512 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:45:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:45:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:26,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:26,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:26,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:26,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 19:45:26,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:26,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:26,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:45:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:26,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:26,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:26,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:26,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:45:26,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:45:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:26,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:26,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:45:26,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:45:26,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:45:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:26,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:26,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 19:45:26,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 19:45:26,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 19:45:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:45:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 19:45:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:26,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 19:45:26,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:26,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 19:45:26,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 19:45:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:45:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 19:45:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:45:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:27,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:27,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:27,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:45:27,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:45:27,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:27,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 19:45:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:45:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:45:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:45:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:27,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:27,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:27,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:27,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:45:27,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 19:45:27,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419073446] [2020-10-13 19:45:27,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:45:27,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 19:45:27,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209807025] [2020-10-13 19:45:27,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 19:45:27,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:45:27,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 19:45:27,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-13 19:45:27,090 INFO L87 Difference]: Start difference. First operand 1017 states and 1353 transitions. Second operand 15 states. [2020-10-13 19:45:37,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:45:37,929 INFO L93 Difference]: Finished difference Result 2094 states and 2810 transitions. [2020-10-13 19:45:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 19:45:37,932 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-10-13 19:45:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:45:37,936 INFO L225 Difference]: With dead ends: 2094 [2020-10-13 19:45:37,936 INFO L226 Difference]: Without dead ends: 1104 [2020-10-13 19:45:37,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-13 19:45:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-10-13 19:45:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1047. [2020-10-13 19:45:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-10-13 19:45:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1397 transitions. [2020-10-13 19:45:38,061 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1397 transitions. Word has length 81 [2020-10-13 19:45:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:45:38,062 INFO L479 AbstractCegarLoop]: Abstraction has 1047 states and 1397 transitions. [2020-10-13 19:45:38,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 19:45:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1397 transitions. [2020-10-13 19:45:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 19:45:38,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:45:38,063 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:45:38,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 19:45:38,064 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:45:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:45:38,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1352442471, now seen corresponding path program 9 times [2020-10-13 19:45:38,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:45:38,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726630364] [2020-10-13 19:45:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:45:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:40,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:40,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 19:45:40,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:45:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-13 19:45:40,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:45:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 19:45:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 19:45:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:40,803 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:45:40,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:45:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:40,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:40,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:40,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 19:45:40,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:45:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:40,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:40,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:40,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:40,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:45:40,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:45:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:40,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:40,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:45:40,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:45:40,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:45:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:40,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:41,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 19:45:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:45:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 19:45:41,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:41,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:41,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:41,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 19:45:41,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:45:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 19:45:41,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 19:45:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:41,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:45:41,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:41,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 19:45:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:41,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:41,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:45:41,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:41,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:45:41,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:45:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 19:45:41,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:41,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:41,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:41,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:45:41,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 19:45:41,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726630364] [2020-10-13 19:45:41,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:45:41,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 19:45:41,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283203497] [2020-10-13 19:45:41,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 19:45:41,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:45:41,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 19:45:41,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 19:45:41,224 INFO L87 Difference]: Start difference. First operand 1047 states and 1397 transitions. Second operand 7 states. [2020-10-13 19:45:42,277 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-10-13 19:45:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:45:49,842 INFO L93 Difference]: Finished difference Result 2277 states and 3068 transitions. [2020-10-13 19:45:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 19:45:49,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-13 19:45:49,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:45:49,850 INFO L225 Difference]: With dead ends: 2277 [2020-10-13 19:45:49,850 INFO L226 Difference]: Without dead ends: 1257 [2020-10-13 19:45:49,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-13 19:45:49,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-10-13 19:45:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1226. [2020-10-13 19:45:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-10-13 19:45:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1653 transitions. [2020-10-13 19:45:49,982 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1653 transitions. Word has length 83 [2020-10-13 19:45:49,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:45:49,982 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1653 transitions. [2020-10-13 19:45:49,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 19:45:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1653 transitions. [2020-10-13 19:45:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 19:45:49,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:45:49,986 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:45:49,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 19:45:49,987 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:45:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:45:49,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1074899624, now seen corresponding path program 1 times [2020-10-13 19:45:49,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:45:49,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776250650] [2020-10-13 19:45:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:45:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:51,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:51,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 19:45:51,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:45:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1435 [2020-10-13 19:45:51,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 19:45:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:45:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 19:45:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:51,852 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:45:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:45:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:51,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:51,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:51,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:51,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:51,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 19:45:51,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:51,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:45:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:51,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:51,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:51,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:51,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:45:51,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:51,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:45:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:51,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:51,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:45:51,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:51,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:45:51,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:51,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:51,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:45:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:52,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:52,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 19:45:52,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:52,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 19:45:52,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 19:45:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:45:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 19:45:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:52,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:52,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:52,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 19:45:52,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 19:45:52,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 19:45:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:45:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 19:45:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 19:45:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:52,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:52,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:52,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:45:52,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:45:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:52,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 19:45:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:52,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:52,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:45:52,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:45:52,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:45:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:45:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:52,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:52,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:45:52,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:45:52,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:45:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 19:45:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:45:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:45:52,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:45:52,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:45:52,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:45:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:45:52,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:45:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:45:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:45:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:45:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:45:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 81 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 19:45:52,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776250650] [2020-10-13 19:45:52,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:45:52,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 19:45:52,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690081940] [2020-10-13 19:45:52,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 19:45:52,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:45:52,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 19:45:52,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-13 19:45:52,385 INFO L87 Difference]: Start difference. First operand 1226 states and 1653 transitions. Second operand 16 states. [2020-10-13 19:46:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:46:03,502 INFO L93 Difference]: Finished difference Result 2540 states and 3454 transitions. [2020-10-13 19:46:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 19:46:03,506 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-10-13 19:46:03,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:46:03,512 INFO L225 Difference]: With dead ends: 2540 [2020-10-13 19:46:03,512 INFO L226 Difference]: Without dead ends: 1341 [2020-10-13 19:46:03,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-13 19:46:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-10-13 19:46:03,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1271. [2020-10-13 19:46:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-10-13 19:46:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1719 transitions. [2020-10-13 19:46:03,641 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1719 transitions. Word has length 96 [2020-10-13 19:46:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:46:03,641 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1719 transitions. [2020-10-13 19:46:03,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 19:46:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1719 transitions. [2020-10-13 19:46:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 19:46:03,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:46:03,649 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:46:03,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 19:46:03,649 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:46:03,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:46:03,649 INFO L82 PathProgramCache]: Analyzing trace with hash -774302428, now seen corresponding path program 2 times [2020-10-13 19:46:03,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:46:03,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983275857] [2020-10-13 19:46:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:46:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:05,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 19:46:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:46:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-10-13 19:46:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 19:46:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:46:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 19:46:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:05,554 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:46:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:46:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:05,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:05,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:05,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 19:46:05,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:46:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:46:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:05,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:05,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:05,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:05,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:05,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:05,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:05,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:05,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:46:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:05,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:05,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:05,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:46:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:46:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:05,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:46:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:05,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:05,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:05,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 19:46:05,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-13 19:46:05,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 19:46:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:46:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 19:46:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:46:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:06,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:06,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 19:46:06,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:06,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 19:46:06,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 19:46:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:46:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 19:46:06,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:46:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 19:46:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:06,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:46:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 19:46:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:06,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:06,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:46:06,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:46:06,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:46:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:06,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:06,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:06,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:06,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:06,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:06,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:06,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 19:46:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:06,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:06,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 19:46:06,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983275857] [2020-10-13 19:46:06,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:46:06,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 19:46:06,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388181546] [2020-10-13 19:46:06,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 19:46:06,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:46:06,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 19:46:06,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-13 19:46:06,407 INFO L87 Difference]: Start difference. First operand 1271 states and 1719 transitions. Second operand 17 states. [2020-10-13 19:46:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:46:17,077 INFO L93 Difference]: Finished difference Result 2630 states and 3586 transitions. [2020-10-13 19:46:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 19:46:17,080 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-10-13 19:46:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:46:17,085 INFO L225 Difference]: With dead ends: 2630 [2020-10-13 19:46:17,085 INFO L226 Difference]: Without dead ends: 1386 [2020-10-13 19:46:17,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-13 19:46:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2020-10-13 19:46:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1316. [2020-10-13 19:46:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-10-13 19:46:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1785 transitions. [2020-10-13 19:46:17,209 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1785 transitions. Word has length 98 [2020-10-13 19:46:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:46:17,209 INFO L479 AbstractCegarLoop]: Abstraction has 1316 states and 1785 transitions. [2020-10-13 19:46:17,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 19:46:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1785 transitions. [2020-10-13 19:46:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 19:46:17,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:46:17,211 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:46:17,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 19:46:17,212 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:46:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:46:17,212 INFO L82 PathProgramCache]: Analyzing trace with hash 258986144, now seen corresponding path program 3 times [2020-10-13 19:46:17,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:46:17,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067655704] [2020-10-13 19:46:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:46:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:18,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:18,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 19:46:18,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:46:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-10-13 19:46:18,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:18,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 19:46:18,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:46:18,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 19:46:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,200 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:46:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:46:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:19,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 19:46:19,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:46:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:19,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:19,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:46:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:46:19,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:46:19,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:46:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 19:46:19,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 19:46:19,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 19:46:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:46:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 19:46:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 19:46:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 19:46:19,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 19:46:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:46:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 19:46:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 19:46:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:19,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:46:19,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 19:46:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:46:19,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:46:19,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:46:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:19,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:19,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 19:46:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:19,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:19,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 4 proven. 121 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 19:46:19,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067655704] [2020-10-13 19:46:19,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:46:19,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 19:46:19,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586115684] [2020-10-13 19:46:19,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 19:46:19,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:46:19,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 19:46:19,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-10-13 19:46:19,881 INFO L87 Difference]: Start difference. First operand 1316 states and 1785 transitions. Second operand 18 states. [2020-10-13 19:46:29,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:46:29,609 INFO L93 Difference]: Finished difference Result 2720 states and 3718 transitions. [2020-10-13 19:46:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 19:46:29,615 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 100 [2020-10-13 19:46:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:46:29,621 INFO L225 Difference]: With dead ends: 2720 [2020-10-13 19:46:29,621 INFO L226 Difference]: Without dead ends: 1431 [2020-10-13 19:46:29,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-13 19:46:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-10-13 19:46:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1361. [2020-10-13 19:46:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-10-13 19:46:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1851 transitions. [2020-10-13 19:46:29,745 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1851 transitions. Word has length 100 [2020-10-13 19:46:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:46:29,746 INFO L479 AbstractCegarLoop]: Abstraction has 1361 states and 1851 transitions. [2020-10-13 19:46:29,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 19:46:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1851 transitions. [2020-10-13 19:46:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 19:46:29,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:46:29,748 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:46:29,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 19:46:29,748 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:46:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:46:29,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1111858460, now seen corresponding path program 4 times [2020-10-13 19:46:29,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:46:29,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838821859] [2020-10-13 19:46:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:46:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:31,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:31,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 19:46:31,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:46:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1853 [2020-10-13 19:46:31,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 19:46:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:46:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 19:46:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,097 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:46:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:46:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:32,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 19:46:32,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:32,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:32,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:32,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:46:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:32,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:46:32,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:46:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:46:32,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:32,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:32,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:32,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:32,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:46:32,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:46:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 19:46:32,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 19:46:32,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 19:46:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:46:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 19:46:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 19:46:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 19:46:32,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 19:46:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:46:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 19:46:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 19:46:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:32,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:32,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 19:46:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:46:32,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:46:32,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:46:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:32,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:32,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 19:46:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:32,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:32,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:32,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:32,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:46:32,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:32,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 19:46:32,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838821859] [2020-10-13 19:46:32,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:46:32,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 19:46:32,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737854469] [2020-10-13 19:46:32,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 19:46:32,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:46:32,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 19:46:32,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2020-10-13 19:46:32,806 INFO L87 Difference]: Start difference. First operand 1361 states and 1851 transitions. Second operand 19 states. [2020-10-13 19:46:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:46:41,033 INFO L93 Difference]: Finished difference Result 2810 states and 3850 transitions. [2020-10-13 19:46:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 19:46:41,039 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-13 19:46:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:46:41,045 INFO L225 Difference]: With dead ends: 2810 [2020-10-13 19:46:41,045 INFO L226 Difference]: Without dead ends: 1476 [2020-10-13 19:46:41,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-10-13 19:46:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-10-13 19:46:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1406. [2020-10-13 19:46:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1406 states. [2020-10-13 19:46:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 1917 transitions. [2020-10-13 19:46:41,219 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 1917 transitions. Word has length 102 [2020-10-13 19:46:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:46:41,219 INFO L479 AbstractCegarLoop]: Abstraction has 1406 states and 1917 transitions. [2020-10-13 19:46:41,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 19:46:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 1917 transitions. [2020-10-13 19:46:41,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 19:46:41,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:46:41,225 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:46:41,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 19:46:41,225 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:46:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:46:41,226 INFO L82 PathProgramCache]: Analyzing trace with hash 383400600, now seen corresponding path program 5 times [2020-10-13 19:46:41,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:46:41,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294369840] [2020-10-13 19:46:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:46:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:42,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:43,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 19:46:43,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:46:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1842 [2020-10-13 19:46:43,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 19:46:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:46:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 19:46:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:43,557 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:46:43,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:46:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:43,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:43,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:43,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 19:46:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:43,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:46:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:43,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:43,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:43,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:43,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:43,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:43,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:46:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:46:43,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:46:43,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:46:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:43,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:43,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 19:46:43,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 19:46:43,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 19:46:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:46:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 19:46:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:43,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:44,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:44,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 19:46:44,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 19:46:44,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 19:46:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:46:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 19:46:44,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:46:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:44,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:44,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:44,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:44,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 19:46:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:44,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:46:44,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:46:44,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:46:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:44,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:44,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:44,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:44,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:44,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 19:46:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:44,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:46:44,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 4 proven. 169 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 19:46:44,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294369840] [2020-10-13 19:46:44,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:46:44,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 19:46:44,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178806157] [2020-10-13 19:46:44,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 19:46:44,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:46:44,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 19:46:44,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2020-10-13 19:46:44,344 INFO L87 Difference]: Start difference. First operand 1406 states and 1917 transitions. Second operand 20 states. [2020-10-13 19:46:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:46:53,785 INFO L93 Difference]: Finished difference Result 2900 states and 3982 transitions. [2020-10-13 19:46:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 19:46:53,791 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-10-13 19:46:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:46:53,796 INFO L225 Difference]: With dead ends: 2900 [2020-10-13 19:46:53,796 INFO L226 Difference]: Without dead ends: 1521 [2020-10-13 19:46:53,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2020-10-13 19:46:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2020-10-13 19:46:53,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1451. [2020-10-13 19:46:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1451 states. [2020-10-13 19:46:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1983 transitions. [2020-10-13 19:46:53,913 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1983 transitions. Word has length 104 [2020-10-13 19:46:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:46:53,913 INFO L479 AbstractCegarLoop]: Abstraction has 1451 states and 1983 transitions. [2020-10-13 19:46:53,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 19:46:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1983 transitions. [2020-10-13 19:46:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 19:46:53,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:46:53,916 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:46:53,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 19:46:53,916 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:46:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:46:53,916 INFO L82 PathProgramCache]: Analyzing trace with hash 415066388, now seen corresponding path program 6 times [2020-10-13 19:46:53,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:46:53,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375053463] [2020-10-13 19:46:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:46:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:55,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:55,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 19:46:55,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:46:55,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-10-13 19:46:55,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 19:46:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:46:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 19:46:55,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:56,301 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:46:56,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:46:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:56,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:56,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:56,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 19:46:56,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:56,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:46:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:56,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:56,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:46:56,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:46:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:56,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:56,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:46:56,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:46:56,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:56,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:46:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:56,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:56,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 19:46:56,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 19:46:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 19:46:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:46:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 19:46:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 19:46:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 19:46:56,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 19:46:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:46:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 19:46:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:57,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 19:46:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:57,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:57,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:57,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:46:57,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 19:46:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:57,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:57,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:57,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:46:57,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:46:57,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:46:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:46:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:57,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:57,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:46:57,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:46:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:46:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 19:46:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:46:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:46:57,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:46:57,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:46:57,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:46:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:46:57,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:46:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:46:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:46:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:46:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:46:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 19:46:57,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375053463] [2020-10-13 19:46:57,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:46:57,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 19:46:57,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80197802] [2020-10-13 19:46:57,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 19:46:57,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:46:57,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 19:46:57,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2020-10-13 19:46:57,116 INFO L87 Difference]: Start difference. First operand 1451 states and 1983 transitions. Second operand 21 states. [2020-10-13 19:47:07,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:47:07,835 INFO L93 Difference]: Finished difference Result 2990 states and 4114 transitions. [2020-10-13 19:47:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 19:47:07,840 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 106 [2020-10-13 19:47:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:47:07,847 INFO L225 Difference]: With dead ends: 2990 [2020-10-13 19:47:07,848 INFO L226 Difference]: Without dead ends: 1566 [2020-10-13 19:47:07,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2020-10-13 19:47:07,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2020-10-13 19:47:07,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1496. [2020-10-13 19:47:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-10-13 19:47:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2049 transitions. [2020-10-13 19:47:07,945 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2049 transitions. Word has length 106 [2020-10-13 19:47:07,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:47:07,945 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 2049 transitions. [2020-10-13 19:47:07,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 19:47:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2049 transitions. [2020-10-13 19:47:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 19:47:07,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:47:07,948 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:47:07,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 19:47:07,948 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:47:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:47:07,948 INFO L82 PathProgramCache]: Analyzing trace with hash 781117584, now seen corresponding path program 7 times [2020-10-13 19:47:07,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:47:07,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926573522] [2020-10-13 19:47:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:47:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:08,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:10,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:10,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 19:47:10,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:47:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-10-13 19:47:10,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 19:47:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 19:47:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 19:47:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:10,527 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 19:47:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:47:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:10,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:10,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:47:10,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:10,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 19:47:10,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:47:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:47:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:47:10,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:47:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:10,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:10,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:47:10,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:10,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:47:10,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:47:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:47:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:47:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:10,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:47:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:10,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:10,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:10,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 19:47:10,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:47:10,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:47:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:47:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:47:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 19:47:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:10,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:10,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 19:47:10,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:10,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-13 19:47:10,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:10,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 19:47:10,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 19:47:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 19:47:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:10,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:47:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:11,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:11,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 19:47:11,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 19:47:11,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 19:47:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:47:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 19:47:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 19:47:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:11,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:11,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:47:11,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:47:11,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:47:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:47:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:47:11,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:11,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 19:47:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 19:47:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:47:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 19:47:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:47:11,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:47:11,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:47:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:47:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:47:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 19:47:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:47:11,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:47:11,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:47:11,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:47:11,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:47:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:47:11,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:47:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:47:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:47:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:47:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:47:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 4 proven. 225 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 19:47:11,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926573522] [2020-10-13 19:47:11,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:47:11,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 19:47:11,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858715756] [2020-10-13 19:47:11,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 19:47:11,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:47:11,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 19:47:11,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2020-10-13 19:47:11,448 INFO L87 Difference]: Start difference. First operand 1496 states and 2049 transitions. Second operand 22 states.