/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:14:44,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:14:44,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:14:44,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:14:44,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:14:44,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:14:44,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:14:44,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:14:44,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:14:44,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:14:44,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:14:44,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:14:44,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:14:44,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:14:44,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:14:44,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:14:44,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:14:44,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:14:44,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:14:44,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:14:44,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:14:44,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:14:44,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:14:44,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:14:44,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:14:44,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:14:44,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:14:44,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:14:44,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:14:44,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:14:44,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:14:44,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:14:44,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:14:44,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:14:44,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:14:44,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:14:44,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:14:44,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:14:44,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:14:44,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:14:44,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:14:44,713 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 [2020-08-19 00:14:44,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:14:44,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:14:44,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:14:44,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:14:44,738 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:14:44,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:14:44,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:14:44,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:14:44,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:14:44,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:14:44,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:14:44,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:14:44,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:14:44,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:14:44,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:14:44,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:14:44,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:14:44,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:14:44,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:14:44,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:14:44,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:14:44,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:14:44,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:14:44,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:14:44,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:14:44,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:14:44,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:14:44,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:14:44,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:14:44,743 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 -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:14:45,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:14:45,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:14:45,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:14:45,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:14:45,088 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:14:45,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-19 00:14:45,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be56b63f/0ae73b3f51db44e68abdef454fc9ae12/FLAGe5c020f44 [2020-08-19 00:14:45,661 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:14:45,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-19 00:14:45,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be56b63f/0ae73b3f51db44e68abdef454fc9ae12/FLAGe5c020f44 [2020-08-19 00:14:45,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be56b63f/0ae73b3f51db44e68abdef454fc9ae12 [2020-08-19 00:14:46,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:14:46,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:14:46,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:14:46,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:14:46,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:14:46,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:14:45" (1/1) ... [2020-08-19 00:14:46,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369b8346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46, skipping insertion in model container [2020-08-19 00:14:46,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:14:45" (1/1) ... [2020-08-19 00:14:46,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:14:46,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:14:46,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:14:46,551 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:14:46,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:14:46,699 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:14:46,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46 WrapperNode [2020-08-19 00:14:46,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:14:46,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:14:46,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:14:46,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:14:46,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (1/1) ... [2020-08-19 00:14:46,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (1/1) ... [2020-08-19 00:14:46,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (1/1) ... [2020-08-19 00:14:46,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (1/1) ... [2020-08-19 00:14:46,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (1/1) ... [2020-08-19 00:14:46,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (1/1) ... [2020-08-19 00:14:46,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (1/1) ... [2020-08-19 00:14:46,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:14:46,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:14:46,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:14:46,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:14:46,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (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 [2020-08-19 00:14:46,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:14:46,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:14:46,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:14:46,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:14:46,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:14:46,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:14:46,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:14:46,858 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:14:46,858 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:14:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:14:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:14:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:14:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:14:46,860 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:14:46,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:14:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:14:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:14:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:14:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:14:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:14:46,862 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:14:46,862 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:14:46,862 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:14:46,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:14:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:14:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 00:14:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 00:14:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 00:14:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:14:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:14:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:14:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:14:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:14:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:14:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:14:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:14:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:14:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:14:46,867 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:14:46,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:14:46,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 00:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 00:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 00:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:14:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:14:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:14:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:14:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:14:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:14:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:14:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:14:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:14:47,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:14:47,939 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:14:47,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:14:47 BoogieIcfgContainer [2020-08-19 00:14:47,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:14:47,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:14:47,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:14:47,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:14:47,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:14:45" (1/3) ... [2020-08-19 00:14:47,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4959e894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:14:47, skipping insertion in model container [2020-08-19 00:14:47,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:46" (2/3) ... [2020-08-19 00:14:47,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4959e894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:14:47, skipping insertion in model container [2020-08-19 00:14:47,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:14:47" (3/3) ... [2020-08-19 00:14:47,953 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-08-19 00:14:47,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:14:47,971 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:14:47,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:14:48,008 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:14:48,008 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:14:48,008 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:14:48,008 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:14:48,009 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:14:48,009 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:14:48,009 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:14:48,009 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:14:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-19 00:14:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 00:14:48,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:14:48,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:14:48,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:14:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:14:48,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1474572721, now seen corresponding path program 1 times [2020-08-19 00:14:48,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:14:48,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538325603] [2020-08-19 00:14:48,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:14:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,732 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:14:48,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:14:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:14:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:14:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:14:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:14:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:14:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:14:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:14:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:14:48,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538325603] [2020-08-19 00:14:48,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:14:48,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:14:48,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630942386] [2020-08-19 00:14:48,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:14:48,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:14:48,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:14:48,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:14:48,877 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-19 00:14:50,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:14:50,046 INFO L93 Difference]: Finished difference Result 314 states and 404 transitions. [2020-08-19 00:14:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:14:50,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 00:14:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:14:50,063 INFO L225 Difference]: With dead ends: 314 [2020-08-19 00:14:50,063 INFO L226 Difference]: Without dead ends: 173 [2020-08-19 00:14:50,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:14:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-19 00:14:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2020-08-19 00:14:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-19 00:14:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2020-08-19 00:14:50,182 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 59 [2020-08-19 00:14:50,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:14:50,183 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2020-08-19 00:14:50,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:14:50,183 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2020-08-19 00:14:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 00:14:50,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:14:50,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:14:50,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:14:50,196 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:14:50,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:14:50,197 INFO L82 PathProgramCache]: Analyzing trace with hash -902835711, now seen corresponding path program 1 times [2020-08-19 00:14:50,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:14:50,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683322958] [2020-08-19 00:14:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:14:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,702 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:14:50,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:14:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:14:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:14:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:14:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:14:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:14:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:14:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:14:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:14:50,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683322958] [2020-08-19 00:14:50,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:14:50,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:14:50,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801889847] [2020-08-19 00:14:50,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:14:50,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:14:50,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:14:50,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:14:50,848 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand 9 states. [2020-08-19 00:14:51,213 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:14:51,548 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:51,769 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:52,017 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:53,093 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:14:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:14:55,065 INFO L93 Difference]: Finished difference Result 481 states and 605 transitions. [2020-08-19 00:14:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:14:55,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 00:14:55,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:14:55,075 INFO L225 Difference]: With dead ends: 481 [2020-08-19 00:14:55,075 INFO L226 Difference]: Without dead ends: 367 [2020-08-19 00:14:55,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:14:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-19 00:14:55,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 313. [2020-08-19 00:14:55,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-19 00:14:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 384 transitions. [2020-08-19 00:14:55,161 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 384 transitions. Word has length 64 [2020-08-19 00:14:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:14:55,162 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 384 transitions. [2020-08-19 00:14:55,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:14:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 384 transitions. [2020-08-19 00:14:55,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 00:14:55,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:14:55,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:14:55,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:14:55,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:14:55,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:14:55,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2087202736, now seen corresponding path program 1 times [2020-08-19 00:14:55,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:14:55,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561769437] [2020-08-19 00:14:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:14:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,479 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:14:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:14:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:14:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:14:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:14:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:14:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:14:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:14:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:14:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 00:14:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 00:14:55,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561769437] [2020-08-19 00:14:55,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:14:55,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:14:55,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441009695] [2020-08-19 00:14:55,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:14:55,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:14:55,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:14:55,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:14:55,591 INFO L87 Difference]: Start difference. First operand 313 states and 384 transitions. Second operand 9 states. [2020-08-19 00:14:56,004 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:14:56,640 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:57,573 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:14:57,920 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:14:58,316 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:58,556 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:14:59,396 INFO L93 Difference]: Finished difference Result 829 states and 1126 transitions. [2020-08-19 00:14:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:14:59,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 00:14:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:14:59,404 INFO L225 Difference]: With dead ends: 829 [2020-08-19 00:14:59,404 INFO L226 Difference]: Without dead ends: 544 [2020-08-19 00:14:59,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:14:59,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-08-19 00:14:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 454. [2020-08-19 00:14:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-19 00:14:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 573 transitions. [2020-08-19 00:14:59,514 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 573 transitions. Word has length 70 [2020-08-19 00:14:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:14:59,515 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 573 transitions. [2020-08-19 00:14:59,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:14:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 573 transitions. [2020-08-19 00:14:59,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:14:59,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:14:59,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:14:59,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:14:59,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:14:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:14:59,518 INFO L82 PathProgramCache]: Analyzing trace with hash 571882893, now seen corresponding path program 1 times [2020-08-19 00:14:59,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:14:59,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092450675] [2020-08-19 00:14:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:14:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,773 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:14:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:14:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:14:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:14:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:14:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:14:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:14:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:14:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:14:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:14:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:14:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:14:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:14:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:14:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:14:59,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092450675] [2020-08-19 00:14:59,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:14:59,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:14:59,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660177579] [2020-08-19 00:14:59,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:14:59,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:14:59,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:14:59,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:14:59,924 INFO L87 Difference]: Start difference. First operand 454 states and 573 transitions. Second operand 6 states. [2020-08-19 00:15:00,419 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:01,493 INFO L93 Difference]: Finished difference Result 810 states and 1016 transitions. [2020-08-19 00:15:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:15:01,494 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-08-19 00:15:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:01,499 INFO L225 Difference]: With dead ends: 810 [2020-08-19 00:15:01,499 INFO L226 Difference]: Without dead ends: 485 [2020-08-19 00:15:01,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:15:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-19 00:15:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 412. [2020-08-19 00:15:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-19 00:15:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2020-08-19 00:15:01,596 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 88 [2020-08-19 00:15:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:01,597 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2020-08-19 00:15:01,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:15:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2020-08-19 00:15:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 00:15:01,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:01,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:01,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:15:01,599 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:01,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1962075473, now seen corresponding path program 1 times [2020-08-19 00:15:01,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:01,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630507212] [2020-08-19 00:15:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:01,927 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:01,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:15:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:15:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 00:15:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 00:15:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:02,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630507212] [2020-08-19 00:15:02,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:02,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:02,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985221534] [2020-08-19 00:15:02,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:02,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:02,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:02,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:02,100 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand 9 states. [2020-08-19 00:15:02,509 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:03,557 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:03,815 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:04,091 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:04,344 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:05,340 INFO L93 Difference]: Finished difference Result 1234 states and 1655 transitions. [2020-08-19 00:15:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:15:05,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-19 00:15:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:05,350 INFO L225 Difference]: With dead ends: 1234 [2020-08-19 00:15:05,350 INFO L226 Difference]: Without dead ends: 850 [2020-08-19 00:15:05,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:15:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-19 00:15:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 727. [2020-08-19 00:15:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-08-19 00:15:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 881 transitions. [2020-08-19 00:15:05,591 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 881 transitions. Word has length 92 [2020-08-19 00:15:05,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:05,594 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 881 transitions. [2020-08-19 00:15:05,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 881 transitions. [2020-08-19 00:15:05,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 00:15:05,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:05,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:05,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:15:05,602 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:05,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:05,602 INFO L82 PathProgramCache]: Analyzing trace with hash 236594576, now seen corresponding path program 1 times [2020-08-19 00:15:05,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:05,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375581358] [2020-08-19 00:15:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,853 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:05,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:15:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:15:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 00:15:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 00:15:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:05,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375581358] [2020-08-19 00:15:05,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:05,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:05,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410450222] [2020-08-19 00:15:05,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:05,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:05,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:05,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:05,988 INFO L87 Difference]: Start difference. First operand 727 states and 881 transitions. Second operand 9 states. [2020-08-19 00:15:07,032 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:07,301 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:07,585 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:07,831 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:08,584 INFO L93 Difference]: Finished difference Result 1548 states and 1977 transitions. [2020-08-19 00:15:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:15:08,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-19 00:15:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:08,593 INFO L225 Difference]: With dead ends: 1548 [2020-08-19 00:15:08,594 INFO L226 Difference]: Without dead ends: 849 [2020-08-19 00:15:08,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:15:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-08-19 00:15:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 747. [2020-08-19 00:15:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-08-19 00:15:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 901 transitions. [2020-08-19 00:15:08,756 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 901 transitions. Word has length 92 [2020-08-19 00:15:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:08,756 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 901 transitions. [2020-08-19 00:15:08,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 901 transitions. [2020-08-19 00:15:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 00:15:08,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:08,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:08,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:15:08,765 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash 938194450, now seen corresponding path program 1 times [2020-08-19 00:15:08,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:08,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008964115] [2020-08-19 00:15:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,035 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:15:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:15:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 00:15:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 00:15:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:09,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008964115] [2020-08-19 00:15:09,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:09,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:15:09,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602207953] [2020-08-19 00:15:09,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:15:09,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:09,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:15:09,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:15:09,194 INFO L87 Difference]: Start difference. First operand 747 states and 901 transitions. Second operand 11 states. [2020-08-19 00:15:09,800 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:10,046 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:10,286 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:11,010 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:11,270 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:11,527 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:12,470 INFO L93 Difference]: Finished difference Result 1410 states and 1790 transitions. [2020-08-19 00:15:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:15:12,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-19 00:15:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:12,477 INFO L225 Difference]: With dead ends: 1410 [2020-08-19 00:15:12,477 INFO L226 Difference]: Without dead ends: 691 [2020-08-19 00:15:12,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:15:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-08-19 00:15:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 618. [2020-08-19 00:15:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-19 00:15:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 727 transitions. [2020-08-19 00:15:12,578 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 727 transitions. Word has length 92 [2020-08-19 00:15:12,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:12,579 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 727 transitions. [2020-08-19 00:15:12,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:15:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 727 transitions. [2020-08-19 00:15:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 00:15:12,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:12,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:12,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:15:12,583 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:12,583 INFO L82 PathProgramCache]: Analyzing trace with hash -711915603, now seen corresponding path program 1 times [2020-08-19 00:15:12,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:12,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030096229] [2020-08-19 00:15:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,015 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:15:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:15:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 00:15:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 00:15:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:13,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030096229] [2020-08-19 00:15:13,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:13,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:15:13,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531615345] [2020-08-19 00:15:13,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:15:13,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:13,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:15:13,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:15:13,218 INFO L87 Difference]: Start difference. First operand 618 states and 727 transitions. Second operand 12 states. [2020-08-19 00:15:13,693 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:14,349 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:15,037 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:15,361 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:15,606 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:15,887 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:16,166 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:17,896 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:18,201 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:18,641 INFO L93 Difference]: Finished difference Result 1813 states and 2317 transitions. [2020-08-19 00:15:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:15:18,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-19 00:15:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:18,651 INFO L225 Difference]: With dead ends: 1813 [2020-08-19 00:15:18,651 INFO L226 Difference]: Without dead ends: 1405 [2020-08-19 00:15:18,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 00:15:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-08-19 00:15:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1271. [2020-08-19 00:15:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-19 00:15:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1497 transitions. [2020-08-19 00:15:18,867 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1497 transitions. Word has length 96 [2020-08-19 00:15:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:18,869 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1497 transitions. [2020-08-19 00:15:18,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:15:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1497 transitions. [2020-08-19 00:15:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-19 00:15:18,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:18,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:18,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:15:18,873 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:18,874 INFO L82 PathProgramCache]: Analyzing trace with hash 69794205, now seen corresponding path program 1 times [2020-08-19 00:15:18,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:18,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469391316] [2020-08-19 00:15:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,297 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:15:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:15:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 00:15:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:15:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 00:15:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:15:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-19 00:15:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 00:15:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 00:15:19,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469391316] [2020-08-19 00:15:19,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:15:19,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:15:19,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111994016] [2020-08-19 00:15:19,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:15:19,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:19,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:15:19,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:15:19,620 INFO L87 Difference]: Start difference. First operand 1271 states and 1497 transitions. Second operand 16 states. [2020-08-19 00:15:20,473 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:20,785 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 00:15:21,050 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:15:21,314 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:15:21,923 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:22,280 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:22,699 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:22,989 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:24,037 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:24,637 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:24,930 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:25,304 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:25,845 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:26,230 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:26,593 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:27,272 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:27,569 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:28,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:28,345 INFO L93 Difference]: Finished difference Result 2793 states and 3416 transitions. [2020-08-19 00:15:28,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 00:15:28,345 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-19 00:15:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:28,356 INFO L225 Difference]: With dead ends: 2793 [2020-08-19 00:15:28,356 INFO L226 Difference]: Without dead ends: 1726 [2020-08-19 00:15:28,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 00:15:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-08-19 00:15:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1529. [2020-08-19 00:15:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-08-19 00:15:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1785 transitions. [2020-08-19 00:15:28,640 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1785 transitions. Word has length 155 [2020-08-19 00:15:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:28,641 INFO L479 AbstractCegarLoop]: Abstraction has 1529 states and 1785 transitions. [2020-08-19 00:15:28,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 00:15:28,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1785 transitions. [2020-08-19 00:15:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-19 00:15:28,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:28,652 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:28,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:15:28,652 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:28,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:28,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1402201584, now seen corresponding path program 1 times [2020-08-19 00:15:28,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:28,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468114747] [2020-08-19 00:15:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:28,962 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:28,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:28,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:28,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:28,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:15:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:15:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:15:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:15:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 00:15:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:15:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:15:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-19 00:15:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-19 00:15:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-19 00:15:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 00:15:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-19 00:15:29,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468114747] [2020-08-19 00:15:29,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:15:29,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:15:29,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294884426] [2020-08-19 00:15:29,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:15:29,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:15:29,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:15:29,515 INFO L87 Difference]: Start difference. First operand 1529 states and 1785 transitions. Second operand 15 states. [2020-08-19 00:15:30,782 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:31,008 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:31,266 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:31,513 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:31,752 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:32,630 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:33,185 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 00:15:33,685 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 00:15:34,049 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:36,306 INFO L93 Difference]: Finished difference Result 4301 states and 5229 transitions. [2020-08-19 00:15:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:15:36,307 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-19 00:15:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:36,325 INFO L225 Difference]: With dead ends: 4301 [2020-08-19 00:15:36,325 INFO L226 Difference]: Without dead ends: 2605 [2020-08-19 00:15:36,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 00:15:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-08-19 00:15:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2205. [2020-08-19 00:15:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-08-19 00:15:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2585 transitions. [2020-08-19 00:15:36,820 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2585 transitions. Word has length 269 [2020-08-19 00:15:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:36,821 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 2585 transitions. [2020-08-19 00:15:36,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 00:15:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2585 transitions. [2020-08-19 00:15:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-19 00:15:36,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:36,829 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:36,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:15:36,829 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:36,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:36,830 INFO L82 PathProgramCache]: Analyzing trace with hash -692797707, now seen corresponding path program 1 times [2020-08-19 00:15:36,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:36,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220948988] [2020-08-19 00:15:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,121 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:15:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:15:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:15:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:15:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:15:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 00:15:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:15:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:15:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-19 00:15:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-19 00:15:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 00:15:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-19 00:15:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-19 00:15:37,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220948988] [2020-08-19 00:15:37,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:15:37,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:15:37,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892505140] [2020-08-19 00:15:37,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:15:37,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:37,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:15:37,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:15:37,503 INFO L87 Difference]: Start difference. First operand 2205 states and 2585 transitions. Second operand 16 states. [2020-08-19 00:15:38,033 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:38,360 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:15:38,617 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:38,887 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:39,613 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:40,633 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:40,933 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:41,172 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:41,709 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:42,554 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:42,791 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:43,621 INFO L93 Difference]: Finished difference Result 4208 states and 4993 transitions. [2020-08-19 00:15:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 00:15:43,622 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 275 [2020-08-19 00:15:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:43,634 INFO L225 Difference]: With dead ends: 4208 [2020-08-19 00:15:43,635 INFO L226 Difference]: Without dead ends: 2229 [2020-08-19 00:15:43,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 00:15:43,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states.