/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:11:10,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:11:10,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:11:10,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:11:10,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:11:10,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:11:10,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:11:10,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:11:10,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:11:10,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:11:10,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:11:10,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:11:10,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:11:10,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:11:10,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:11:10,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:11:10,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:11:10,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:11:10,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:11:10,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:11:10,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:11:10,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:11:10,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:11:10,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:11:10,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:11:10,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:11:10,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:11:10,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:11:10,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:11:10,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:11:10,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:11:10,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:11:10,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:11:10,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:11:10,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:11:10,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:11:10,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:11:10,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:11:10,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:11:10,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:11:10,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:11:10,761 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 20:11:10,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:11:10,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:11:10,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:11:10,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:11:10,811 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:11:10,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:11:10,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:11:10,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:11:10,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:11:10,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:11:10,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:11:10,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:11:10,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:11:10,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:11:10,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:11:10,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:11:10,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:11:10,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:11:10,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:11:10,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:11:10,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:11:10,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:11:10,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:11:10,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:11:10,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:11:10,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:11:10,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:11:10,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:11:10,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:11:10,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:11:11,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:11:11,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:11:11,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:11:11,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:11:11,116 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:11:11,117 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-18 20:11:11,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d84fed79/c4ccfb071de64a1a8d3eefad7dd70db9/FLAGd47c60aba [2020-08-18 20:11:11,732 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:11:11,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-18 20:11:11,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d84fed79/c4ccfb071de64a1a8d3eefad7dd70db9/FLAGd47c60aba [2020-08-18 20:11:12,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d84fed79/c4ccfb071de64a1a8d3eefad7dd70db9 [2020-08-18 20:11:12,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:11:12,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:11:12,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:11:12,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:11:12,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:11:12,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12, skipping insertion in model container [2020-08-18 20:11:12,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:11:12,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:11:12,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:11:12,617 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:11:12,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:11:12,741 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:11:12,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12 WrapperNode [2020-08-18 20:11:12,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:11:12,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:11:12,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:11:12,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:11:12,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (1/1) ... [2020-08-18 20:11:12,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:11:12,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:11:12,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:11:12,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:11:12,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (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 20:11:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:11:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:11:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:11:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:11:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:11:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:11:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:11:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 20:11:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:11:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:11:12,946 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:11:12,946 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:11:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:11:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 20:11:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:11:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:11:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:11:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:11:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:11:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:11:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:11:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:11:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:11:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:11:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:11:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:11:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:11:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:11:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:11:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:11:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:11:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:11:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:11:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:11:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:11:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:11:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:11:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:11:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:11:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:11:12,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:11:12,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:11:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:11:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:11:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:11:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:11:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:11:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:11:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:11:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:11:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:11:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:11:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 20:11:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:11:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:11:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:11:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:11:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:11:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:11:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:11:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:11:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:11:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:11:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:11:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:11:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:11:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:11:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:11:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:11:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:11:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:11:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:11:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 20:11:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:11:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:11:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:11:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:11:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:11:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:11:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:11:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:11:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:11:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:11:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:11:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:11:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:11:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:11:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:11:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:11:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:11:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:11:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:11:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:11:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:11:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:11:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:11:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:11:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:11:14,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:11:14,130 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:11:14,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:11:14 BoogieIcfgContainer [2020-08-18 20:11:14,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:11:14,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:11:14,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:11:14,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:11:14,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:11:12" (1/3) ... [2020-08-18 20:11:14,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac9a324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:11:14, skipping insertion in model container [2020-08-18 20:11:14,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:11:12" (2/3) ... [2020-08-18 20:11:14,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac9a324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:11:14, skipping insertion in model container [2020-08-18 20:11:14,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:11:14" (3/3) ... [2020-08-18 20:11:14,144 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2020-08-18 20:11:14,155 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:11:14,163 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:11:14,177 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:11:14,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:11:14,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:11:14,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:11:14,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:11:14,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:11:14,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:11:14,204 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:11:14,204 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:11:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-18 20:11:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:11:14,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:14,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:11:14,239 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash -589768967, now seen corresponding path program 1 times [2020-08-18 20:11:14,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:14,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595638192] [2020-08-18 20:11:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:14,930 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:14,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:15,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:11:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:15,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:11:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:11:15,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595638192] [2020-08-18 20:11:15,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:11:15,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:11:15,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369704311] [2020-08-18 20:11:15,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:11:15,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:15,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:11:15,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:11:15,120 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-18 20:11:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:16,381 INFO L93 Difference]: Finished difference Result 343 states and 441 transitions. [2020-08-18 20:11:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:11:16,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:11:16,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:16,399 INFO L225 Difference]: With dead ends: 343 [2020-08-18 20:11:16,399 INFO L226 Difference]: Without dead ends: 185 [2020-08-18 20:11:16,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:11:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-18 20:11:16,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-18 20:11:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 20:11:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-08-18 20:11:16,549 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 46 [2020-08-18 20:11:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:16,551 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-08-18 20:11:16,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:11:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-08-18 20:11:16,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:11:16,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:16,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:11:16,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:11:16,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:16,562 INFO L82 PathProgramCache]: Analyzing trace with hash -211037911, now seen corresponding path program 1 times [2020-08-18 20:11:16,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:16,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293442387] [2020-08-18 20:11:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:16,910 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:16,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:16,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:11:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:11:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:11:16,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293442387] [2020-08-18 20:11:16,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:11:16,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:11:16,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008258434] [2020-08-18 20:11:16,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:11:16,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:16,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:11:16,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:11:16,952 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 4 states. [2020-08-18 20:11:17,421 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:18,347 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2020-08-18 20:11:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:11:18,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:11:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:18,352 INFO L225 Difference]: With dead ends: 270 [2020-08-18 20:11:18,352 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 20:11:18,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:11:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 20:11:18,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-18 20:11:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 20:11:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2020-08-18 20:11:18,394 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 47 [2020-08-18 20:11:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:18,394 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2020-08-18 20:11:18,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:11:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2020-08-18 20:11:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:11:18,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:18,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:11:18,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:11:18,397 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:18,397 INFO L82 PathProgramCache]: Analyzing trace with hash 607971640, now seen corresponding path program 1 times [2020-08-18 20:11:18,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:18,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789239703] [2020-08-18 20:11:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:18,702 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:18,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:18,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:11:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:18,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:11:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:11:18,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789239703] [2020-08-18 20:11:18,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:11:18,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:11:18,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003590199] [2020-08-18 20:11:18,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:11:18,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:18,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:11:18,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:11:18,833 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 8 states. [2020-08-18 20:11:19,211 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:11:19,505 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:19,740 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:19,963 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:20,654 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:22,639 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2020-08-18 20:11:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:11:22,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 20:11:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:22,651 INFO L225 Difference]: With dead ends: 476 [2020-08-18 20:11:22,652 INFO L226 Difference]: Without dead ends: 360 [2020-08-18 20:11:22,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:11:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-18 20:11:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-18 20:11:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-18 20:11:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2020-08-18 20:11:22,735 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 51 [2020-08-18 20:11:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:22,736 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2020-08-18 20:11:22,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:11:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2020-08-18 20:11:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 20:11:22,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:22,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:11:22,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:11:22,739 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:22,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1795694260, now seen corresponding path program 1 times [2020-08-18 20:11:22,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:22,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226618395] [2020-08-18 20:11:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,031 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:23,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:11:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:11:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:11:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:11:23,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226618395] [2020-08-18 20:11:23,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:11:23,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:11:23,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099795130] [2020-08-18 20:11:23,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:11:23,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:23,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:11:23,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:11:23,166 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand 12 states. [2020-08-18 20:11:23,604 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:11:23,936 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:24,179 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:24,401 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:24,918 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:25,768 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:26,171 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:11:26,567 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:11:26,839 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:11:27,104 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:11:27,459 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:11:27,823 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:11:28,220 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:30,251 INFO L93 Difference]: Finished difference Result 1213 states and 1632 transitions. [2020-08-18 20:11:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:11:30,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 20:11:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:30,261 INFO L225 Difference]: With dead ends: 1213 [2020-08-18 20:11:30,261 INFO L226 Difference]: Without dead ends: 939 [2020-08-18 20:11:30,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 20:11:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-18 20:11:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 842. [2020-08-18 20:11:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-08-18 20:11:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1054 transitions. [2020-08-18 20:11:30,441 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1054 transitions. Word has length 57 [2020-08-18 20:11:30,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:30,442 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1054 transitions. [2020-08-18 20:11:30,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:11:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1054 transitions. [2020-08-18 20:11:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 20:11:30,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:30,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:11:30,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:11:30,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2070558330, now seen corresponding path program 1 times [2020-08-18 20:11:30,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:30,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884795504] [2020-08-18 20:11:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,699 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:30,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:11:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:11:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:11:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 20:11:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:11:30,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884795504] [2020-08-18 20:11:30,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:11:30,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:11:30,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903070667] [2020-08-18 20:11:30,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:11:30,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:11:30,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:11:30,805 INFO L87 Difference]: Start difference. First operand 842 states and 1054 transitions. Second operand 6 states. [2020-08-18 20:11:31,133 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:11:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:32,971 INFO L93 Difference]: Finished difference Result 1979 states and 2649 transitions. [2020-08-18 20:11:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:11:32,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 20:11:32,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:33,024 INFO L225 Difference]: With dead ends: 1979 [2020-08-18 20:11:33,025 INFO L226 Difference]: Without dead ends: 1161 [2020-08-18 20:11:33,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:11:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-08-18 20:11:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1074. [2020-08-18 20:11:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-08-18 20:11:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1340 transitions. [2020-08-18 20:11:33,233 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1340 transitions. Word has length 61 [2020-08-18 20:11:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:33,234 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1340 transitions. [2020-08-18 20:11:33,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:11:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1340 transitions. [2020-08-18 20:11:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 20:11:33,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:33,237 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 20:11:33,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:11:33,238 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1347234794, now seen corresponding path program 1 times [2020-08-18 20:11:33,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:33,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063663856] [2020-08-18 20:11:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,579 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:33,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:11:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:11:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:11:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 20:11:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:11:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:11:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 20:11:33,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063663856] [2020-08-18 20:11:33,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:11:33,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:11:33,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552328815] [2020-08-18 20:11:33,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:11:33,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:33,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:11:33,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:11:33,830 INFO L87 Difference]: Start difference. First operand 1074 states and 1340 transitions. Second operand 10 states. [2020-08-18 20:11:34,553 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 20:11:35,114 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:11:37,179 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:11:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:39,217 INFO L93 Difference]: Finished difference Result 2051 states and 2661 transitions. [2020-08-18 20:11:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 20:11:39,217 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 20:11:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:39,248 INFO L225 Difference]: With dead ends: 2051 [2020-08-18 20:11:39,249 INFO L226 Difference]: Without dead ends: 1278 [2020-08-18 20:11:39,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 20:11:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-18 20:11:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1181. [2020-08-18 20:11:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-18 20:11:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1451 transitions. [2020-08-18 20:11:39,469 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1451 transitions. Word has length 88 [2020-08-18 20:11:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:39,470 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1451 transitions. [2020-08-18 20:11:39,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:11:39,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1451 transitions. [2020-08-18 20:11:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 20:11:39,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:39,475 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 20:11:39,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:11:39,475 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:39,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1802078625, now seen corresponding path program 1 times [2020-08-18 20:11:39,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:39,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617437551] [2020-08-18 20:11:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,712 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:39,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:11:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:11:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:11:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:11:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:11:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:11:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:11:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 20:11:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 20:11:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 20:11:39,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617437551] [2020-08-18 20:11:39,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:11:39,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 20:11:39,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679643113] [2020-08-18 20:11:39,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:11:39,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:39,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:11:39,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:11:39,926 INFO L87 Difference]: Start difference. First operand 1181 states and 1451 transitions. Second operand 9 states. [2020-08-18 20:11:40,985 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:41,211 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:41,479 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:42,622 INFO L93 Difference]: Finished difference Result 2161 states and 2784 transitions. [2020-08-18 20:11:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:11:42,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-08-18 20:11:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:42,631 INFO L225 Difference]: With dead ends: 2161 [2020-08-18 20:11:42,632 INFO L226 Difference]: Without dead ends: 1304 [2020-08-18 20:11:42,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:11:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-18 20:11:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1181. [2020-08-18 20:11:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-18 20:11:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1449 transitions. [2020-08-18 20:11:42,930 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1449 transitions. Word has length 147 [2020-08-18 20:11:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:42,931 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1449 transitions. [2020-08-18 20:11:42,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:11:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1449 transitions. [2020-08-18 20:11:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 20:11:42,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:42,938 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 20:11:42,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:11:42,938 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 321074684, now seen corresponding path program 1 times [2020-08-18 20:11:42,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:42,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805113129] [2020-08-18 20:11:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,223 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:11:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:11:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:11:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:11:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:11:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:11:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 20:11:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 20:11:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 20:11:43,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805113129] [2020-08-18 20:11:43,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:11:43,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:11:43,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184809175] [2020-08-18 20:11:43,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:11:43,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:43,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:11:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:11:43,403 INFO L87 Difference]: Start difference. First operand 1181 states and 1449 transitions. Second operand 10 states. [2020-08-18 20:11:44,397 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:44,625 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:11:44,878 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:45,110 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:46,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:46,341 INFO L93 Difference]: Finished difference Result 2481 states and 3186 transitions. [2020-08-18 20:11:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:11:46,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-18 20:11:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:46,351 INFO L225 Difference]: With dead ends: 2481 [2020-08-18 20:11:46,351 INFO L226 Difference]: Without dead ends: 1324 [2020-08-18 20:11:46,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:11:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-08-18 20:11:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1201. [2020-08-18 20:11:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-08-18 20:11:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1471 transitions. [2020-08-18 20:11:46,574 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1471 transitions. Word has length 143 [2020-08-18 20:11:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:46,574 INFO L479 AbstractCegarLoop]: Abstraction has 1201 states and 1471 transitions. [2020-08-18 20:11:46,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:11:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1471 transitions. [2020-08-18 20:11:46,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 20:11:46,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:46,580 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 20:11:46,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:11:46,580 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:46,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:46,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1297900230, now seen corresponding path program 1 times [2020-08-18 20:11:46,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:46,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166819057] [2020-08-18 20:11:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:46,966 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:46,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:11:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:11:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:11:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:11:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:11:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:11:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 20:11:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 20:11:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 20:11:47,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166819057] [2020-08-18 20:11:47,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:11:47,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:11:47,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662421051] [2020-08-18 20:11:47,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:11:47,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:47,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:11:47,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:11:47,306 INFO L87 Difference]: Start difference. First operand 1201 states and 1471 transitions. Second operand 12 states. [2020-08-18 20:11:48,003 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:48,274 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:48,499 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:49,142 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:49,394 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:49,632 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:50,841 INFO L93 Difference]: Finished difference Result 2201 states and 2783 transitions. [2020-08-18 20:11:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:11:50,847 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-18 20:11:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:50,854 INFO L225 Difference]: With dead ends: 2201 [2020-08-18 20:11:50,854 INFO L226 Difference]: Without dead ends: 1024 [2020-08-18 20:11:50,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:11:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-08-18 20:11:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 968. [2020-08-18 20:11:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-08-18 20:11:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1170 transitions. [2020-08-18 20:11:51,041 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1170 transitions. Word has length 143 [2020-08-18 20:11:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:51,041 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1170 transitions. [2020-08-18 20:11:51,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:11:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1170 transitions. [2020-08-18 20:11:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 20:11:51,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:51,045 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 20:11:51,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:11:51,045 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:51,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:51,046 INFO L82 PathProgramCache]: Analyzing trace with hash 183103711, now seen corresponding path program 1 times [2020-08-18 20:11:51,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:51,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885611281] [2020-08-18 20:11:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,354 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:11:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:11:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:11:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:11:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:11:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:11:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:11:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 20:11:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 20:11:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 20:11:51,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885611281] [2020-08-18 20:11:51,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:11:51,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:11:51,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364109548] [2020-08-18 20:11:51,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:11:51,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:51,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:11:51,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:11:51,578 INFO L87 Difference]: Start difference. First operand 968 states and 1170 transitions. Second operand 10 states. [2020-08-18 20:11:53,326 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:53,556 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:11:53,796 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:54,037 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:54,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:54,419 INFO L93 Difference]: Finished difference Result 1845 states and 2286 transitions. [2020-08-18 20:11:54,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:11:54,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-18 20:11:54,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:54,427 INFO L225 Difference]: With dead ends: 1845 [2020-08-18 20:11:54,427 INFO L226 Difference]: Without dead ends: 1056 [2020-08-18 20:11:54,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:11:54,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-18 20:11:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1000. [2020-08-18 20:11:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-08-18 20:11:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1204 transitions. [2020-08-18 20:11:54,685 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1204 transitions. Word has length 147 [2020-08-18 20:11:54,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:54,686 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1204 transitions. [2020-08-18 20:11:54,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:11:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1204 transitions. [2020-08-18 20:11:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 20:11:54,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:54,691 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 20:11:54,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:11:54,691 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash -326369379, now seen corresponding path program 1 times [2020-08-18 20:11:54,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:54,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101625051] [2020-08-18 20:11:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:54,954 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:54,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:54,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:54,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:11:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:11:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:11:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:11:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:11:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:11:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:11:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:11:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 20:11:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 20:11:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 20:11:55,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101625051] [2020-08-18 20:11:55,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:11:55,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:11:55,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994783890] [2020-08-18 20:11:55,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:11:55,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:11:55,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:11:55,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:11:55,128 INFO L87 Difference]: Start difference. First operand 1000 states and 1204 transitions. Second operand 10 states. [2020-08-18 20:11:55,640 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:11:57,920 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:58,238 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:58,488 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:11:58,727 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:11:58,995 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:11:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:11:59,446 INFO L93 Difference]: Finished difference Result 1077 states and 1322 transitions. [2020-08-18 20:11:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:11:59,447 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-18 20:11:59,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:11:59,453 INFO L225 Difference]: With dead ends: 1077 [2020-08-18 20:11:59,453 INFO L226 Difference]: Without dead ends: 1074 [2020-08-18 20:11:59,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:11:59,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-08-18 20:11:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1000. [2020-08-18 20:11:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-08-18 20:11:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1199 transitions. [2020-08-18 20:11:59,599 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1199 transitions. Word has length 147 [2020-08-18 20:11:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:11:59,599 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1199 transitions. [2020-08-18 20:11:59,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:11:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1199 transitions. [2020-08-18 20:11:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 20:11:59,603 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:11:59,603 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 20:11:59,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:11:59,603 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:11:59,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:11:59,604 INFO L82 PathProgramCache]: Analyzing trace with hash 154971906, now seen corresponding path program 1 times [2020-08-18 20:11:59,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:11:59,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715061851] [2020-08-18 20:11:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:11:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,894 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:11:59,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:11:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:11:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:11:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:11:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:11:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:11:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:11:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:11:59,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:11:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:12:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:12:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:12:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:12:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:12:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 20:12:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 20:12:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 20:12:00,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715061851] [2020-08-18 20:12:00,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:12:00,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:12:00,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074296197] [2020-08-18 20:12:00,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:12:00,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:00,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:12:00,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:12:00,142 INFO L87 Difference]: Start difference. First operand 1000 states and 1199 transitions. Second operand 12 states. [2020-08-18 20:12:00,664 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:12:01,224 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:12:01,711 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:12:01,991 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:12:02,264 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:12:02,521 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:12:02,816 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:03,097 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:05,039 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:12:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:05,859 INFO L93 Difference]: Finished difference Result 2405 states and 3114 transitions. [2020-08-18 20:12:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 20:12:05,860 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-18 20:12:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:05,870 INFO L225 Difference]: With dead ends: 2405 [2020-08-18 20:12:05,870 INFO L226 Difference]: Without dead ends: 1584 [2020-08-18 20:12:05,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 20:12:05,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-08-18 20:12:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1334. [2020-08-18 20:12:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-08-18 20:12:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1633 transitions. [2020-08-18 20:12:06,123 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1633 transitions. Word has length 151 [2020-08-18 20:12:06,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:06,124 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 1633 transitions. [2020-08-18 20:12:06,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:12:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1633 transitions. [2020-08-18 20:12:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-18 20:12:06,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:06,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:06,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:12:06,136 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1326265885, now seen corresponding path program 2 times [2020-08-18 20:12:06,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:06,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449960114] [2020-08-18 20:12:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,571 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:12:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:12:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:12:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:12:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:12:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:12:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:12:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:12:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 20:12:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 20:12:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:12:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-18 20:12:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 20:12:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 20:12:06,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449960114] [2020-08-18 20:12:06,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:12:06,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 20:12:06,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585114062] [2020-08-18 20:12:06,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:12:06,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:06,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:12:06,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:12:06,911 INFO L87 Difference]: Start difference. First operand 1334 states and 1633 transitions. Second operand 13 states. [2020-08-18 20:12:07,955 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186