/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:06:41,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:06:41,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:06:41,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:06:41,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:06:41,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:06:41,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:06:41,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:06:41,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:06:41,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:06:41,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:06:41,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:06:41,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:06:41,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:06:41,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:06:41,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:06:41,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:06:41,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:06:41,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:06:41,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:06:41,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:06:41,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:06:41,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:06:41,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:06:41,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:06:41,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:06:41,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:06:41,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:06:41,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:06:41,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:06:41,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:06:41,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:06:41,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:06:41,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:06:41,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:06:41,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:06:41,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:06:41,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:06:41,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:06:41,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:06:41,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:06:41,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:06:41,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:06:41,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:06:41,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:06:41,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:06:41,724 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:06:41,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:06:41,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:06:41,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:06:41,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:06:41,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:06:41,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:06:41,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:06:41,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:06:41,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:06:41,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:06:41,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:06:41,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:06:41,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:06:41,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:06:41,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:06:41,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:06:41,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:06:41,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:06:41,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:06:41,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:06:41,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:06:41,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:06:41,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:06:41,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:06:41,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:06:42,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:06:42,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:06:42,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:06:42,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:06:42,192 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:06:42,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-09-21 12:06:42,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f23d1bb46/53c50b4a687d4f54bf60aa864dae7734/FLAGb85ec6aaa [2020-09-21 12:06:42,887 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:06:42,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-09-21 12:06:42,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f23d1bb46/53c50b4a687d4f54bf60aa864dae7734/FLAGb85ec6aaa [2020-09-21 12:06:43,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f23d1bb46/53c50b4a687d4f54bf60aa864dae7734 [2020-09-21 12:06:43,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:06:43,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:06:43,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:06:43,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:06:43,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:06:43,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:43,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43, skipping insertion in model container [2020-09-21 12:06:43,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:43,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:06:43,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:06:43,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:06:43,734 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:06:43,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:06:43,910 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:06:43,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43 WrapperNode [2020-09-21 12:06:43,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:06:43,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:06:43,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:06:43,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:06:43,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:43,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:43,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:43,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:43,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:44,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:44,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (1/1) ... [2020-09-21 12:06:44,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:06:44,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:06:44,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:06:44,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:06:44,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (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 [2020-09-21 12:06:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:06:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:06:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:06:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:06:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:06:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:06:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:06:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:06:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:06:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:06:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:06:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:06:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:06:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:06:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:06:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:06:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:06:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:06:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:06:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:06:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:06:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:06:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:06:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:06:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:06:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:06:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:06:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:06:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:06:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:06:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:06:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:06:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:06:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:06:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:06:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:06:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:06:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:06:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:06:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:06:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:06:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:06:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:06:47,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:06:47,349 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:06:47,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:06:47 BoogieIcfgContainer [2020-09-21 12:06:47,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:06:47,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:06:47,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:06:47,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:06:47,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:06:43" (1/3) ... [2020-09-21 12:06:47,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a48c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:06:47, skipping insertion in model container [2020-09-21 12:06:47,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:43" (2/3) ... [2020-09-21 12:06:47,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a48c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:06:47, skipping insertion in model container [2020-09-21 12:06:47,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:06:47" (3/3) ... [2020-09-21 12:06:47,373 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-09-21 12:06:47,385 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:06:47,398 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:06:47,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:06:47,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:06:47,453 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:06:47,453 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:06:47,453 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:06:47,453 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:06:47,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:06:47,454 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:06:47,454 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:06:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-09-21 12:06:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:06:47,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:06:47,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:06:47,497 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:06:47,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:06:47,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-09-21 12:06:47,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:06:47,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775451676] [2020-09-21 12:06:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:06:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:47,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:48,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:48,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:06:48,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:06:48,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-21 12:06:48,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:06:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:06:49,281 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:06:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:06:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:49,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:49,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:49,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:06:49,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:49,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:06:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:49,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:49,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:49,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:49,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:49,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:49,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:49,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:06:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:49,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:49,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:49,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:06:49,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:49,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:06:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:49,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:49,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:49,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:06:49,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:06:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:49,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:49,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:49,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:49,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:06:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:49,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:49,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:49,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:49,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:06:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:49,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:49,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:49,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:49,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:49,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:06:49,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775451676] [2020-09-21 12:06:49,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:06:49,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:06:49,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080911790] [2020-09-21 12:06:49,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:06:49,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:06:49,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:06:49,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:06:49,484 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-09-21 12:06:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:06:50,798 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-09-21 12:06:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:06:50,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:06:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:06:50,823 INFO L225 Difference]: With dead ends: 278 [2020-09-21 12:06:50,823 INFO L226 Difference]: Without dead ends: 151 [2020-09-21 12:06:50,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:06:50,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-21 12:06:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-09-21 12:06:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 12:06:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-09-21 12:06:50,964 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-09-21 12:06:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:06:50,965 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-09-21 12:06:50,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:06:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-09-21 12:06:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:06:50,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:06:50,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:06:50,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:06:50,970 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:06:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:06:50,971 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-09-21 12:06:50,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:06:50,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786189535] [2020-09-21 12:06:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:06:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:52,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:06:52,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:06:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-09-21 12:06:52,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:06:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:06:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:06:52,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:06:52,472 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:06:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:06:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:52,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:52,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:52,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:06:52,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:06:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:52,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:52,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:52,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:52,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:06:52,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:06:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:52,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:52,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:52,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:06:52,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:06:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:52,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:52,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:52,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:52,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:52,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:52,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:52,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:52,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:06:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:52,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:52,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:52,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:06:52,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:06:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:52,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:06:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:52,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:06:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:52,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:52,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:52,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:52,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:06:52,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:52,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:52,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:06:52,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786189535] [2020-09-21 12:06:52,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:06:52,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:06:52,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304275509] [2020-09-21 12:06:52,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:06:52,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:06:52,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:06:52,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:06:52,650 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-09-21 12:06:53,181 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:06:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:06:53,888 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-09-21 12:06:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:06:53,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:06:53,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:06:53,892 INFO L225 Difference]: With dead ends: 198 [2020-09-21 12:06:53,893 INFO L226 Difference]: Without dead ends: 135 [2020-09-21 12:06:53,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:06:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-21 12:06:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-09-21 12:06:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-21 12:06:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-09-21 12:06:53,933 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-09-21 12:06:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:06:53,933 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-09-21 12:06:53,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:06:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-09-21 12:06:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:06:53,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:06:53,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:06:53,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:06:53,937 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:06:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:06:53,937 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-09-21 12:06:53,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:06:53,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875016098] [2020-09-21 12:06:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:06:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:55,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:55,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:06:55,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:06:55,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-21 12:06:55,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:55,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:06:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:06:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:06:55,338 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:06:55,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:06:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:55,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:55,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-21 12:06:55,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:06:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:06:55,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:06:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:55,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:55,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:55,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:55,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:55,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:55,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:06:55,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:06:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:06:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:55,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:55,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:55,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:06:55,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:06:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:06:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:55,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:06:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:55,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:55,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:06:55,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:06:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:06:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:55,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:06:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:55,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:55,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:55,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:55,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:55,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:55,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:06:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:06:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:55,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:06:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:55,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:55,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:55,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:55,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:06:55,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:55,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:55,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:55,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:55,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:06:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:55,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:55,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:55,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:55,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:55,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:55,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:06:55,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875016098] [2020-09-21 12:06:55,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:06:55,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:06:55,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853824073] [2020-09-21 12:06:55,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:06:55,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:06:55,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:06:55,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:06:55,589 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 4 states. [2020-09-21 12:06:56,021 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:06:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:06:57,451 INFO L93 Difference]: Finished difference Result 315 states and 385 transitions. [2020-09-21 12:06:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:06:57,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:06:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:06:57,456 INFO L225 Difference]: With dead ends: 315 [2020-09-21 12:06:57,457 INFO L226 Difference]: Without dead ends: 230 [2020-09-21 12:06:57,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:06:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-21 12:06:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 178. [2020-09-21 12:06:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-21 12:06:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-09-21 12:06:57,552 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 52 [2020-09-21 12:06:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:06:57,552 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-09-21 12:06:57,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:06:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-09-21 12:06:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:06:57,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:06:57,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:06:57,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:06:57,566 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:06:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:06:57,567 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-09-21 12:06:57,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:06:57,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360830802] [2020-09-21 12:06:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:06:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:57,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:58,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:58,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:58,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:06:58,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:06:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:06:58,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:06:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:06:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:06:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,024 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:06:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:06:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:59,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:06:59,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:06:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:06:59,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:06:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:59,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:06:59,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:06:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:06:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:59,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:59,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:06:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:59,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:06:59,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:06:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:06:59,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:06:59,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:06:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:06:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:06:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:59,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:06:59,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:06:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:06:59,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:06:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:59,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:06:59,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:06:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:06:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:06:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:06:59,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360830802] [2020-09-21 12:06:59,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:06:59,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:06:59,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935139816] [2020-09-21 12:06:59,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:06:59,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:06:59,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:06:59,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:06:59,297 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 8 states. [2020-09-21 12:06:59,880 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:00,986 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:01,352 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:01,658 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:02,220 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:02,600 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:03,336 INFO L93 Difference]: Finished difference Result 503 states and 646 transitions. [2020-09-21 12:07:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:07:03,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:07:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:03,343 INFO L225 Difference]: With dead ends: 503 [2020-09-21 12:07:03,343 INFO L226 Difference]: Without dead ends: 349 [2020-09-21 12:07:03,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:07:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-21 12:07:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 298. [2020-09-21 12:07:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-21 12:07:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 362 transitions. [2020-09-21 12:07:03,412 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 362 transitions. Word has length 57 [2020-09-21 12:07:03,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:03,413 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 362 transitions. [2020-09-21 12:07:03,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 362 transitions. [2020-09-21 12:07:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:07:03,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:03,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:03,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:07:03,416 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:03,416 INFO L82 PathProgramCache]: Analyzing trace with hash 954578145, now seen corresponding path program 1 times [2020-09-21 12:07:03,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:03,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877052809] [2020-09-21 12:07:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:04,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:04,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:04,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:07:04,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-09-21 12:07:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-21 12:07:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:04,746 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:04,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:04,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:04,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:04,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:07:04,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:04,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:04,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:04,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:04,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:04,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:04,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:04,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:04,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:04,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:04,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:04,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:04,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:04,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:04,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:04,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:04,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:04,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:04,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:04,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:04,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:04,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:04,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:04,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:04,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:05,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:05,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-21 12:07:05,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:05,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:05,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:05,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:07:05,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:07:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:05,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:05,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:05,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:07:05,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:07:05,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:05,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:05,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:05,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:05,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 12:07:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:05,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-21 12:07:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:05,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:05,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:05,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:05,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877052809] [2020-09-21 12:07:05,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:05,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:07:05,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318551824] [2020-09-21 12:07:05,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:07:05,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:05,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:07:05,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:07:05,173 INFO L87 Difference]: Start difference. First operand 298 states and 362 transitions. Second operand 7 states. [2020-09-21 12:07:06,404 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:06,736 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:07,078 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:07,898 INFO L93 Difference]: Finished difference Result 643 states and 836 transitions. [2020-09-21 12:07:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:07:07,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-09-21 12:07:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:07,902 INFO L225 Difference]: With dead ends: 643 [2020-09-21 12:07:07,902 INFO L226 Difference]: Without dead ends: 369 [2020-09-21 12:07:07,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:07,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-09-21 12:07:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 309. [2020-09-21 12:07:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-09-21 12:07:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 373 transitions. [2020-09-21 12:07:07,976 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 373 transitions. Word has length 75 [2020-09-21 12:07:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:07,976 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 373 transitions. [2020-09-21 12:07:07,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:07:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 373 transitions. [2020-09-21 12:07:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:07:07,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:07,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:07,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:07:07,979 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:07,979 INFO L82 PathProgramCache]: Analyzing trace with hash 445105055, now seen corresponding path program 1 times [2020-09-21 12:07:07,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:07,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174855666] [2020-09-21 12:07:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:07:09,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:07:09,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:07:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:07:09,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,305 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:09,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-21 12:07:09,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:09,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:09,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:09,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:09,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:09,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:09,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:09,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:09,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:09,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:09,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:07:09,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:07:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:09,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:07:09,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:07:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:09,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:09,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:09,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:09,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 12:07:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:09,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:09,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-21 12:07:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:09,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:09,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:09,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:09,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:09,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:09,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174855666] [2020-09-21 12:07:09,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:09,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:07:09,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997616019] [2020-09-21 12:07:09,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:07:09,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:09,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:07:09,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:07:09,635 INFO L87 Difference]: Start difference. First operand 309 states and 373 transitions. Second operand 6 states. [2020-09-21 12:07:10,343 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:10,981 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:13,311 INFO L93 Difference]: Finished difference Result 1134 states and 1515 transitions. [2020-09-21 12:07:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:07:13,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-09-21 12:07:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:13,319 INFO L225 Difference]: With dead ends: 1134 [2020-09-21 12:07:13,319 INFO L226 Difference]: Without dead ends: 849 [2020-09-21 12:07:13,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-09-21 12:07:13,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 773. [2020-09-21 12:07:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-09-21 12:07:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 965 transitions. [2020-09-21 12:07:13,465 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 965 transitions. Word has length 75 [2020-09-21 12:07:13,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:13,465 INFO L479 AbstractCegarLoop]: Abstraction has 773 states and 965 transitions. [2020-09-21 12:07:13,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:07:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 965 transitions. [2020-09-21 12:07:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:07:13,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:13,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:13,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:07:13,469 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:13,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1330285310, now seen corresponding path program 1 times [2020-09-21 12:07:13,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:13,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442446572] [2020-09-21 12:07:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:14,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:07:14,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:14,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:07:14,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:07:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:14,782 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:14,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:14,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:14,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:07:14,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:14,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:14,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:14,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:14,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:14,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:14,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:14,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:14,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:14,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:14,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:14,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:14,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:14,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:14,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:14,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:14,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:14,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:14,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:14,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:07:14,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:14,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:14,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:07:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:14,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:15,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:07:15,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:07:15,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:15,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:15,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:15,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:15,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:15,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:15,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 12:07:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:15,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:15,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-21 12:07:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:15,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:15,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:15,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442446572] [2020-09-21 12:07:15,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:15,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:15,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371380573] [2020-09-21 12:07:15,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:15,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:15,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:15,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:15,105 INFO L87 Difference]: Start difference. First operand 773 states and 965 transitions. Second operand 8 states. [2020-09-21 12:07:16,296 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:16,570 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:16,919 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:17,240 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:17,997 INFO L93 Difference]: Finished difference Result 1608 states and 2065 transitions. [2020-09-21 12:07:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:07:17,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-09-21 12:07:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:18,004 INFO L225 Difference]: With dead ends: 1608 [2020-09-21 12:07:18,004 INFO L226 Difference]: Without dead ends: 859 [2020-09-21 12:07:18,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:07:18,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-21 12:07:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 793. [2020-09-21 12:07:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-09-21 12:07:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 985 transitions. [2020-09-21 12:07:18,154 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 985 transitions. Word has length 75 [2020-09-21 12:07:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:18,154 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 985 transitions. [2020-09-21 12:07:18,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 985 transitions. [2020-09-21 12:07:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:07:18,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:18,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:18,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:07:18,157 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1839758400, now seen corresponding path program 1 times [2020-09-21 12:07:18,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:18,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646418474] [2020-09-21 12:07:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:07:19,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-21 12:07:19,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-21 12:07:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:19,474 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:19,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:19,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:07:19,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:19,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:19,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:19,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:19,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:19,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:19,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:19,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:19,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:19,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:19,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:19,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:19,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:07:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:19,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:07:19,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:07:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:19,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:19,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:19,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:19,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:19,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 12:07:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:19,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:19,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-21 12:07:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:19,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:19,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:19,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:19,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:19,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646418474] [2020-09-21 12:07:19,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:19,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:07:19,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425709716] [2020-09-21 12:07:19,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:07:19,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:19,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:07:19,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:07:19,756 INFO L87 Difference]: Start difference. First operand 793 states and 985 transitions. Second operand 7 states. [2020-09-21 12:07:20,948 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:21,285 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:21,548 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:22,205 INFO L93 Difference]: Finished difference Result 1465 states and 1870 transitions. [2020-09-21 12:07:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:07:22,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-09-21 12:07:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:22,209 INFO L225 Difference]: With dead ends: 1465 [2020-09-21 12:07:22,210 INFO L226 Difference]: Without dead ends: 696 [2020-09-21 12:07:22,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:22,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-21 12:07:22,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 656. [2020-09-21 12:07:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-09-21 12:07:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 798 transitions. [2020-09-21 12:07:22,374 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 798 transitions. Word has length 75 [2020-09-21 12:07:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:22,379 INFO L479 AbstractCegarLoop]: Abstraction has 656 states and 798 transitions. [2020-09-21 12:07:22,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:07:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 798 transitions. [2020-09-21 12:07:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 12:07:22,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:22,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:22,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:07:22,385 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:22,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:22,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2133130565, now seen corresponding path program 1 times [2020-09-21 12:07:22,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:22,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16024321] [2020-09-21 12:07:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:07:23,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-21 12:07:23,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:07:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-21 12:07:23,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:23,843 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:23,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:23,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:23,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:23,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 12:07:23,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:23,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:24,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:24,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:24,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:24,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:24,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:24,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:24,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:24,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:07:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:24,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:24,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:07:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:24,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:07:24,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:07:24,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:24,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:24,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:24,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:24,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:24,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:24,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:24,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 12:07:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:24,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:24,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:07:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:24,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:24,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:24,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:24,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:24,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16024321] [2020-09-21 12:07:24,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:24,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:07:24,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093632896] [2020-09-21 12:07:24,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:07:24,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:24,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:07:24,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:07:24,174 INFO L87 Difference]: Start difference. First operand 656 states and 798 transitions. Second operand 9 states. [2020-09-21 12:07:24,782 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:25,838 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:26,213 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:26,535 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:26,837 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:27,308 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:28,922 INFO L93 Difference]: Finished difference Result 1955 states and 2523 transitions. [2020-09-21 12:07:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:07:28,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-09-21 12:07:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:28,937 INFO L225 Difference]: With dead ends: 1955 [2020-09-21 12:07:28,938 INFO L226 Difference]: Without dead ends: 1323 [2020-09-21 12:07:28,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:07:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-09-21 12:07:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1237. [2020-09-21 12:07:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2020-09-21 12:07:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1516 transitions. [2020-09-21 12:07:29,226 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1516 transitions. Word has length 79 [2020-09-21 12:07:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:29,227 INFO L479 AbstractCegarLoop]: Abstraction has 1237 states and 1516 transitions. [2020-09-21 12:07:29,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:07:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1516 transitions. [2020-09-21 12:07:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 12:07:29,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:29,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:29,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:07:29,232 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:29,232 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-09-21 12:07:29,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:29,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545856716] [2020-09-21 12:07:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:07:29,291 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:07:29,292 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:07:29,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:07:29,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:07:29 BoogieIcfgContainer [2020-09-21 12:07:29,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:07:29,361 INFO L168 Benchmark]: Toolchain (without parser) took 46186.13 ms. Allocated memory was 146.3 MB in the beginning and 729.8 MB in the end (delta: 583.5 MB). Free memory was 101.4 MB in the beginning and 681.7 MB in the end (delta: -580.3 MB). Peak memory consumption was 569.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:29,365 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:07:29,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.78 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.8 MB in the beginning and 172.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:29,372 INFO L168 Benchmark]: Boogie Preprocessor took 110.80 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:29,373 INFO L168 Benchmark]: RCFGBuilder took 3337.11 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.0 MB in the beginning and 199.9 MB in the end (delta: -31.9 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:29,377 INFO L168 Benchmark]: TraceAbstraction took 41994.88 ms. Allocated memory was 234.9 MB in the beginning and 729.8 MB in the end (delta: 494.9 MB). Free memory was 199.9 MB in the beginning and 681.7 MB in the end (delta: -481.8 MB). Peak memory consumption was 579.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:07:29,382 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.78 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.8 MB in the beginning and 172.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.80 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3337.11 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.0 MB in the beginning and 199.9 MB in the end (delta: -31.9 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41994.88 ms. Allocated memory was 234.9 MB in the beginning and 729.8 MB in the end (delta: 494.9 MB). Free memory was 199.9 MB in the beginning and 681.7 MB in the end (delta: -481.8 MB). Peak memory consumption was 579.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___2)) [L380] tmp___1 = __VERIFIER_nondet_int() [L382] COND FALSE !(\read(tmp___1)) [L391] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; [L200] CALL, EXPR isHighWaterSensorDry() [L319] int retValue_acc ; [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); [L200] RET, EXPR isHighWaterSensorDry() [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) [L106] CALL activatePump() [L125] pumpRunning = 1 [L106] RET activatePump() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification1_spec__1() [L808] int tmp ; [L809] int tmp___0 ; [L813] CALL, EXPR isMethaneLevelCritical() [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L813] RET, EXPR isMethaneLevelCritical() [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) [L817] CALL, EXPR isPumpRunning() [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); [L817] RET, EXPR isPumpRunning() [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) [L821] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 25.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1011 SDtfs, 1438 SDslu, 949 SDs, 0 SdLazy, 3831 SolverSat, 884 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1237occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 490 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 572 ConstructedInterpolants, 0 QuantifiedInterpolants, 166836 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...