/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:27:48,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:27:48,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:27:48,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:27:48,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:27:48,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:27:48,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:27:48,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:27:48,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:27:48,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:27:48,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:27:48,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:27:48,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:27:48,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:27:48,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:27:48,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:27:48,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:27:48,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:27:48,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:27:48,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:27:48,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:27:48,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:27:48,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:27:48,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:27:48,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:27:48,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:27:48,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:27:48,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:27:48,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:27:48,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:27:48,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:27:48,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:27:48,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:27:48,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:27:48,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:27:48,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:27:48,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:27:48,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:27:48,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:27:48,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:27:48,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:27:48,759 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 [2020-08-18 10:27:48,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:27:48,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:27:48,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:27:48,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:27:48,791 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:27:48,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:27:48,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:27:48,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:27:48,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:27:48,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:27:48,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:27:48,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:27:48,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:27:48,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:27:48,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:27:48,795 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:27:48,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:27:48,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:27:48,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:27:48,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:27:48,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:27:48,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:27:48,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:27:48,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:27:48,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:27:48,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:27:48,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:27:48,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:27:48,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:27:48,799 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 -> false [2020-08-18 10:27:49,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:27:49,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:27:49,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:27:49,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:27:49,105 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:27:49,106 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-18 10:27:49,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba27cdba/ca3bd5f000224835955ee2a98ef37e18/FLAGdeac5291d [2020-08-18 10:27:49,639 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:27:49,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-18 10:27:49,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba27cdba/ca3bd5f000224835955ee2a98ef37e18/FLAGdeac5291d [2020-08-18 10:27:50,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba27cdba/ca3bd5f000224835955ee2a98ef37e18 [2020-08-18 10:27:50,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:27:50,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:27:50,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:27:50,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:27:50,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:27:50,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50, skipping insertion in model container [2020-08-18 10:27:50,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:27:50,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:27:50,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:27:50,557 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:27:50,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:27:50,730 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:27:50,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50 WrapperNode [2020-08-18 10:27:50,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:27:50,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:27:50,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:27:50,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:27:50,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (1/1) ... [2020-08-18 10:27:50,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:27:50,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:27:50,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:27:50,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:27:50,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (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 [2020-08-18 10:27:50,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:27:50,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:27:50,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:27:50,888 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:27:50,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:27:50,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:27:50,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:27:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 10:27:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:27:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:27:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:27:50,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:27:50,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:27:50,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:27:50,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:27:50,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:27:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:27:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:27:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 10:27:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 10:27:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 10:27:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:27:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:27:50,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:27:50,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:27:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:27:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:27:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:27:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:27:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:27:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:27:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:27:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:27:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:27:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:27:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:27:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:27:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:27:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:27:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:27:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:27:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:27:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:27:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:27:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:27:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:27:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:27:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:27:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:27:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:27:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:27:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:27:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:27:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:27:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:27:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:27:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:27:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:27:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:27:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:27:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 10:27:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 10:27:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:27:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:27:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:27:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:27:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:27:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 10:27:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:27:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:27:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:27:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:27:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:27:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:27:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:27:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:27:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 10:27:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:27:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:27:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:27:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:27:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:27:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:27:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:27:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:27:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:27:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:27:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:27:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:27:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:27:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:27:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:27:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:27:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:27:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:27:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:27:51,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:27:51,949 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:27:51,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:27:51 BoogieIcfgContainer [2020-08-18 10:27:51,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:27:51,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:27:51,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:27:51,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:27:51,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:27:50" (1/3) ... [2020-08-18 10:27:51,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b35d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:27:51, skipping insertion in model container [2020-08-18 10:27:51,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:27:50" (2/3) ... [2020-08-18 10:27:51,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b35d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:27:51, skipping insertion in model container [2020-08-18 10:27:51,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:27:51" (3/3) ... [2020-08-18 10:27:51,972 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2020-08-18 10:27:51,984 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:27:51,996 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:27:52,010 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:27:52,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:27:52,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:27:52,036 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:27:52,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:27:52,037 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:27:52,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:27:52,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:27:52,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:27:52,059 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-18 10:27:52,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 10:27:52,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:52,071 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] [2020-08-18 10:27:52,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2020-08-18 10:27:52,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:52,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606956574] [2020-08-18 10:27:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,822 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:52,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:27:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:27:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:27:52,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606956574] [2020-08-18 10:27:52,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:27:52,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:27:52,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672506857] [2020-08-18 10:27:52,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:27:52,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:52,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:27:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:27:52,968 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-18 10:27:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:54,130 INFO L93 Difference]: Finished difference Result 360 states and 456 transitions. [2020-08-18 10:27:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:27:54,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 10:27:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:54,149 INFO L225 Difference]: With dead ends: 360 [2020-08-18 10:27:54,149 INFO L226 Difference]: Without dead ends: 198 [2020-08-18 10:27:54,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:27:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-18 10:27:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-08-18 10:27:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-18 10:27:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-08-18 10:27:54,268 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2020-08-18 10:27:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:54,270 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-08-18 10:27:54,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:27:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-08-18 10:27:54,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 10:27:54,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:54,282 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] [2020-08-18 10:27:54,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:27:54,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:54,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:54,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2020-08-18 10:27:54,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:54,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386104505] [2020-08-18 10:27:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,712 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:27:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:27:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:27:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:27:54,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386104505] [2020-08-18 10:27:54,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:27:54,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:27:54,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545909688] [2020-08-18 10:27:54,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:27:54,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:54,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:27:54,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:27:54,773 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 5 states. [2020-08-18 10:27:55,243 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:56,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:56,309 INFO L93 Difference]: Finished difference Result 295 states and 356 transitions. [2020-08-18 10:27:56,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 10:27:56,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 10:27:56,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:56,315 INFO L225 Difference]: With dead ends: 295 [2020-08-18 10:27:56,315 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 10:27:56,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:27:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 10:27:56,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 154. [2020-08-18 10:27:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 10:27:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-08-18 10:27:56,361 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2020-08-18 10:27:56,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:56,362 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-08-18 10:27:56,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:27:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-08-18 10:27:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:27:56,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:56,364 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] [2020-08-18 10:27:56,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:27:56,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:56,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:56,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2020-08-18 10:27:56,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:56,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474566905] [2020-08-18 10:27:56,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,776 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:27:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 10:27:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:27:56,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474566905] [2020-08-18 10:27:56,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:27:56,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:27:56,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549596176] [2020-08-18 10:27:56,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:27:56,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:56,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:27:56,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:27:56,863 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 9 states. [2020-08-18 10:27:57,225 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:57,564 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:57,872 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:58,152 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:59,184 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:28:01,440 INFO L93 Difference]: Finished difference Result 515 states and 629 transitions. [2020-08-18 10:28:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:28:01,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 10:28:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:28:01,447 INFO L225 Difference]: With dead ends: 515 [2020-08-18 10:28:01,448 INFO L226 Difference]: Without dead ends: 389 [2020-08-18 10:28:01,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:28:01,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-18 10:28:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 324. [2020-08-18 10:28:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-08-18 10:28:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2020-08-18 10:28:01,550 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2020-08-18 10:28:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:28:01,550 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2020-08-18 10:28:01,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:28:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2020-08-18 10:28:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 10:28:01,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:28:01,554 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] [2020-08-18 10:28:01,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:28:01,555 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:28:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:28:01,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2020-08-18 10:28:01,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:28:01,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536706610] [2020-08-18 10:28:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:28:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,926 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:28:01,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:28:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:28:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:28:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:28:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:28:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 10:28:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:01,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 10:28:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 10:28:02,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536706610] [2020-08-18 10:28:02,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:28:02,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:28:02,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077540102] [2020-08-18 10:28:02,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:28:02,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:28:02,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:28:02,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:28:02,020 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 9 states. [2020-08-18 10:28:02,440 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:03,268 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:04,344 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:04,607 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:04,968 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:05,267 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:28:06,216 INFO L93 Difference]: Finished difference Result 819 states and 1054 transitions. [2020-08-18 10:28:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:28:06,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 10:28:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:28:06,223 INFO L225 Difference]: With dead ends: 819 [2020-08-18 10:28:06,223 INFO L226 Difference]: Without dead ends: 523 [2020-08-18 10:28:06,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:28:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-18 10:28:06,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 455. [2020-08-18 10:28:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-08-18 10:28:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2020-08-18 10:28:06,324 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 70 [2020-08-18 10:28:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:28:06,325 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2020-08-18 10:28:06,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:28:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2020-08-18 10:28:06,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 10:28:06,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:28:06,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:28:06,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:28:06,328 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:28:06,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:28:06,328 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2020-08-18 10:28:06,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:28:06,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184872464] [2020-08-18 10:28:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:28:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,672 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:28:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:28:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:28:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:28:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:28:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:28:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 10:28:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 10:28:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:28:06,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184872464] [2020-08-18 10:28:06,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:28:06,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:28:06,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570549892] [2020-08-18 10:28:06,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:28:06,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:28:06,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:28:06,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:28:06,827 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 9 states. [2020-08-18 10:28:07,958 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:08,259 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:28:08,595 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:08,876 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:28:09,913 INFO L93 Difference]: Finished difference Result 975 states and 1246 transitions. [2020-08-18 10:28:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:28:09,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-18 10:28:09,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:28:09,924 INFO L225 Difference]: With dead ends: 975 [2020-08-18 10:28:09,924 INFO L226 Difference]: Without dead ends: 548 [2020-08-18 10:28:09,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:28:09,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-08-18 10:28:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 468. [2020-08-18 10:28:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-18 10:28:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-18 10:28:10,019 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2020-08-18 10:28:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:28:10,020 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-18 10:28:10,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:28:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-18 10:28:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 10:28:10,022 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:28:10,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:28:10,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:28:10,023 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:28:10,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:28:10,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2020-08-18 10:28:10,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:28:10,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321960227] [2020-08-18 10:28:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:28:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,397 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:28:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:28:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:28:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:28:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:28:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:28:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 10:28:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 10:28:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:28:10,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321960227] [2020-08-18 10:28:10,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:28:10,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 10:28:10,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690761867] [2020-08-18 10:28:10,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:28:10,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:28:10,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:28:10,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:28:10,556 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 11 states. [2020-08-18 10:28:11,076 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:11,353 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:11,606 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:12,475 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:12,776 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:13,055 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:28:14,245 INFO L93 Difference]: Finished difference Result 998 states and 1270 transitions. [2020-08-18 10:28:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:28:14,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 10:28:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:28:14,251 INFO L225 Difference]: With dead ends: 998 [2020-08-18 10:28:14,251 INFO L226 Difference]: Without dead ends: 558 [2020-08-18 10:28:14,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:28:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-08-18 10:28:14,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 476. [2020-08-18 10:28:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-08-18 10:28:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2020-08-18 10:28:14,368 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2020-08-18 10:28:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:28:14,371 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2020-08-18 10:28:14,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:28:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2020-08-18 10:28:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 10:28:14,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:28:14,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:28:14,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:28:14,376 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:28:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:28:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2020-08-18 10:28:14,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:28:14,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223833295] [2020-08-18 10:28:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:28:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,676 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:28:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:28:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:28:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:28:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:28:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:28:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 10:28:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 10:28:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:28:14,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223833295] [2020-08-18 10:28:14,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:28:14,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:28:14,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071033338] [2020-08-18 10:28:14,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:28:14,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:28:14,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:28:14,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:28:14,849 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 7 states. [2020-08-18 10:28:15,167 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:15,747 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:28:18,048 INFO L93 Difference]: Finished difference Result 1479 states and 1900 transitions. [2020-08-18 10:28:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:28:18,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-18 10:28:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:28:18,056 INFO L225 Difference]: With dead ends: 1479 [2020-08-18 10:28:18,056 INFO L226 Difference]: Without dead ends: 1031 [2020-08-18 10:28:18,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:28:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-08-18 10:28:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 953. [2020-08-18 10:28:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-18 10:28:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1151 transitions. [2020-08-18 10:28:18,270 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1151 transitions. Word has length 108 [2020-08-18 10:28:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:28:18,271 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1151 transitions. [2020-08-18 10:28:18,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:28:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1151 transitions. [2020-08-18 10:28:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 10:28:18,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:28:18,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:28:18,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:28:18,276 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:28:18,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:28:18,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2020-08-18 10:28:18,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:28:18,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323481539] [2020-08-18 10:28:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:28:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,690 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:28:18,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:28:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:28:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:28:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:28:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:28:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 10:28:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 10:28:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 10:28:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:28:18,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323481539] [2020-08-18 10:28:18,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:28:18,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:28:18,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094387844] [2020-08-18 10:28:18,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:28:18,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:28:18,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:28:18,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:28:18,897 INFO L87 Difference]: Start difference. First operand 953 states and 1151 transitions. Second operand 12 states. [2020-08-18 10:28:19,387 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:20,108 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:20,910 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:21,290 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:21,583 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:28:21,934 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:22,256 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:24,516 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:24,849 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:28:25,474 INFO L93 Difference]: Finished difference Result 2713 states and 3488 transitions. [2020-08-18 10:28:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 10:28:25,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-18 10:28:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:28:25,496 INFO L225 Difference]: With dead ends: 2713 [2020-08-18 10:28:25,496 INFO L226 Difference]: Without dead ends: 1980 [2020-08-18 10:28:25,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 10:28:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-18 10:28:25,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1674. [2020-08-18 10:28:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-08-18 10:28:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2008 transitions. [2020-08-18 10:28:25,818 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2008 transitions. Word has length 112 [2020-08-18 10:28:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:28:25,821 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 2008 transitions. [2020-08-18 10:28:25,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:28:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2008 transitions. [2020-08-18 10:28:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-18 10:28:25,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:28:25,827 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:28:25,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:28:25,828 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:28:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:28:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2020-08-18 10:28:25,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:28:25,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896614074] [2020-08-18 10:28:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:28:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,186 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:28:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:28:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:28:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:28:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:28:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:28:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:28:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:28:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 10:28:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 10:28:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 10:28:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:28:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 10:28:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 10:28:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 10:28:26,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896614074] [2020-08-18 10:28:26,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:28:26,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 10:28:26,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361818206] [2020-08-18 10:28:26,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 10:28:26,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:28:26,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 10:28:26,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:28:26,514 INFO L87 Difference]: Start difference. First operand 1674 states and 2008 transitions. Second operand 16 states. [2020-08-18 10:28:27,134 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:28:27,506 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:28:27,814 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:28:28,123 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:28:28,957 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:29,291 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:29,682 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:28:30,006 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:28:31,464 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:32,168 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:32,514 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:32,875 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:28:33,504 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:33,990 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:28:34,435 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:28:35,320 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:28:35,716 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:28:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:28:36,659 INFO L93 Difference]: Finished difference Result 3619 states and 4470 transitions. [2020-08-18 10:28:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 10:28:36,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-18 10:28:36,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:28:36,672 INFO L225 Difference]: With dead ends: 3619 [2020-08-18 10:28:36,672 INFO L226 Difference]: Without dead ends: 2153 [2020-08-18 10:28:36,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 10:28:36,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-08-18 10:28:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1961. [2020-08-18 10:28:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-08-18 10:28:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2310 transitions. [2020-08-18 10:28:37,118 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2310 transitions. Word has length 174 [2020-08-18 10:28:37,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:28:37,118 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2310 transitions. [2020-08-18 10:28:37,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 10:28:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2310 transitions. [2020-08-18 10:28:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-18 10:28:37,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:28:37,129 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, 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, 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] [2020-08-18 10:28:37,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:28:37,129 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:28:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:28:37,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1190190750, now seen corresponding path program 1 times [2020-08-18 10:28:37,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:28:37,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009825661] [2020-08-18 10:28:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:28:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,548 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:28:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:28:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:28:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:28:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:28:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:28:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:28:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:28:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:28:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:28:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:28:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:28:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 10:28:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:28:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:37,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:28:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:28:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-18 10:28:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 10:28:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-18 10:28:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-18 10:28:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-18 10:28:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 82 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-18 10:28:38,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009825661] [2020-08-18 10:28:38,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:28:38,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 10:28:38,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959848207] [2020-08-18 10:28:38,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 10:28:38,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:28:38,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 10:28:38,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:28:38,160 INFO L87 Difference]: Start difference. First operand 1961 states and 2310 transitions. Second operand 15 states. [2020-08-18 10:28:39,620 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:39,946 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:28:40,235 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:28:40,528 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:28:40,823 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:28:42,014 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:28:42,649 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 10:28:43,205 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 10:28:43,757 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:28:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:28:47,031 INFO L93 Difference]: Finished difference Result 5471 states and 6670 transitions. [2020-08-18 10:28:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 10:28:47,032 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-18 10:28:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:28:47,052 INFO L225 Difference]: With dead ends: 5471 [2020-08-18 10:28:47,052 INFO L226 Difference]: Without dead ends: 3307 [2020-08-18 10:28:47,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 10:28:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-08-18 10:28:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2847. [2020-08-18 10:28:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-08-18 10:28:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3387 transitions. [2020-08-18 10:28:47,688 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3387 transitions. Word has length 311 [2020-08-18 10:28:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:28:47,689 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3387 transitions. [2020-08-18 10:28:47,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 10:28:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3387 transitions. [2020-08-18 10:28:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-08-18 10:28:47,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:28:47,707 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, 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, 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] [2020-08-18 10:28:47,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:28:47,707 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:28:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:28:47,708 INFO L82 PathProgramCache]: Analyzing trace with hash 665528893, now seen corresponding path program 1 times [2020-08-18 10:28:47,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:28:47,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525274740] [2020-08-18 10:28:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:28:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,050 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:28:48,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:28:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:28:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:28:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:28:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:28:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:28:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:28:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:28:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:28:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:28:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:28:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 10:28:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 10:28:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:28:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:28:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:28:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:28:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 10:28:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:28:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 10:28:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:28:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:28:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:28:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:28:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 10:28:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-18 10:28:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:28:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 90 proven. 38 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-08-18 10:28:48,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525274740] [2020-08-18 10:28:48,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:28:48,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 10:28:48,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584352444] [2020-08-18 10:28:48,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 10:28:48,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:28:48,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 10:28:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:28:48,497 INFO L87 Difference]: Start difference. First operand 2847 states and 3387 transitions. Second operand 16 states. [2020-08-18 10:28:49,056 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189