/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:28:35,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:28:35,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:28:35,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:28:35,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:28:35,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:28:35,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:28:35,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:28:35,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:28:35,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:28:35,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:28:35,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:28:35,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:28:35,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:28:35,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:28:35,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:28:35,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:28:35,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:28:35,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:28:35,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:28:35,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:28:35,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:28:35,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:28:35,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:28:35,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:28:35,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:28:35,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:28:35,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:28:35,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:28:35,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:28:35,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:28:35,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:28:35,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:28:35,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:28:35,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:28:35,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:28:35,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:28:35,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:28:35,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:28:35,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:28:35,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:28:35,830 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 [2020-08-22 04:28:35,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:28:35,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:28:35,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:28:35,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:28:35,873 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:28:35,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:28:35,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:28:35,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:28:35,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:28:35,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:28:35,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:28:35,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:28:35,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:28:35,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:28:35,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:28:35,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:28:35,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:28:35,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:28:35,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:28:35,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:28:35,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:28:35,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:28:35,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:28:35,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:28:35,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:28:35,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:28:35,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:28:35,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:28:35,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:28:35,879 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:28:36,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:28:36,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:28:36,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:28:36,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:28:36,186 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:28:36,186 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-22 04:28:36,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446a3e312/47fe1214abf540148728bbad1c0cf709/FLAG5f940fcfc [2020-08-22 04:28:36,818 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:28:36,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-22 04:28:36,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446a3e312/47fe1214abf540148728bbad1c0cf709/FLAG5f940fcfc [2020-08-22 04:28:37,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446a3e312/47fe1214abf540148728bbad1c0cf709 [2020-08-22 04:28:37,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:28:37,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:28:37,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:28:37,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:28:37,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:28:37,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115854be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37, skipping insertion in model container [2020-08-22 04:28:37,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:28:37,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:28:37,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:28:37,635 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:28:37,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:28:37,747 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:28:37,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37 WrapperNode [2020-08-22 04:28:37,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:28:37,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:28:37,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:28:37,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:28:37,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (1/1) ... [2020-08-22 04:28:37,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:28:37,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:28:37,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:28:37,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:28:37,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:28:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:28:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:28:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:28:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:28:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:28:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:28:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:28:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:28:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:28:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:28:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:28:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:28:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:28:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:28:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:28:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:28:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:28:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:28:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:28:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:28:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:28:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:28:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:28:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:28:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:28:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:28:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:28:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:28:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:28:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:28:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:28:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:28:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:28:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 04:28:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:28:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 04:28:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:28:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:28:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:28:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:28:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:28:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:28:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:28:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:28:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:28:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:28:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:28:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:28:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:28:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:28:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:28:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:28:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:28:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:28:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:28:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:28:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:28:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:28:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:28:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:28:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:28:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:28:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:28:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:28:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:28:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:28:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:28:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:28:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:28:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:28:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:28:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:28:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:28:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:28:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:28:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:28:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:28:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:28:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:28:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:28:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:28:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:28:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:28:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:28:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:28:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:28:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:28:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:28:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:28:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:28:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:28:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:28:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:28:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:28:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:28:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:28:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 04:28:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:28:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 04:28:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:28:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:28:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:28:39,063 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:28:39,064 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:28:39,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:28:39 BoogieIcfgContainer [2020-08-22 04:28:39,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:28:39,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:28:39,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:28:39,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:28:39,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:28:37" (1/3) ... [2020-08-22 04:28:39,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53663bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:28:39, skipping insertion in model container [2020-08-22 04:28:39,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:37" (2/3) ... [2020-08-22 04:28:39,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53663bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:28:39, skipping insertion in model container [2020-08-22 04:28:39,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:28:39" (3/3) ... [2020-08-22 04:28:39,079 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2020-08-22 04:28:39,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:28:39,099 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:28:39,113 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:28:39,139 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:28:39,140 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:28:39,140 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:28:39,140 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:28:39,140 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:28:39,141 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:28:39,141 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:28:39,141 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:28:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-22 04:28:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:28:39,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:39,177 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] [2020-08-22 04:28:39,177 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash -519940638, now seen corresponding path program 1 times [2020-08-22 04:28:39,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:39,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216425081] [2020-08-22 04:28:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,846 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:28:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:28:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:39,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216425081] [2020-08-22 04:28:39,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:39,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:28:39,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263660320] [2020-08-22 04:28:39,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:28:39,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:39,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:28:39,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:28:39,977 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-22 04:28:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:41,264 INFO L93 Difference]: Finished difference Result 354 states and 460 transitions. [2020-08-22 04:28:41,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:28:41,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 04:28:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:41,289 INFO L225 Difference]: With dead ends: 354 [2020-08-22 04:28:41,290 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 04:28:41,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:28:41,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 04:28:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2020-08-22 04:28:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 04:28:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-22 04:28:41,416 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 51 [2020-08-22 04:28:41,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:41,416 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-22 04:28:41,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:28:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-22 04:28:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:28:41,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:41,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:41,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:28:41,422 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:41,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:41,422 INFO L82 PathProgramCache]: Analyzing trace with hash -183354494, now seen corresponding path program 1 times [2020-08-22 04:28:41,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:41,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099478979] [2020-08-22 04:28:41,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,809 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:28:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:28:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:41,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099478979] [2020-08-22 04:28:41,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:41,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:28:41,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642054649] [2020-08-22 04:28:41,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:28:41,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:41,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:28:41,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:28:41,887 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 5 states. [2020-08-22 04:28:42,393 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:43,571 INFO L93 Difference]: Finished difference Result 295 states and 367 transitions. [2020-08-22 04:28:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:28:43,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 04:28:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:43,575 INFO L225 Difference]: With dead ends: 295 [2020-08-22 04:28:43,575 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 04:28:43,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:28:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 04:28:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-22 04:28:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 04:28:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-22 04:28:43,622 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 52 [2020-08-22 04:28:43,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:43,622 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-22 04:28:43,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:28:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-22 04:28:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 04:28:43,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:43,625 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] [2020-08-22 04:28:43,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:28:43,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:43,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:43,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1707012514, now seen corresponding path program 1 times [2020-08-22 04:28:43,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:43,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013833598] [2020-08-22 04:28:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:43,986 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:43,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:44,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:44,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:28:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:44,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:28:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:44,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013833598] [2020-08-22 04:28:44,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:44,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:28:44,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241315152] [2020-08-22 04:28:44,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:28:44,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:44,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:28:44,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:28:44,087 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 9 states. [2020-08-22 04:28:44,461 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:44,791 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:45,036 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:45,286 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:46,762 INFO L93 Difference]: Finished difference Result 308 states and 386 transitions. [2020-08-22 04:28:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:28:46,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 04:28:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:46,766 INFO L225 Difference]: With dead ends: 308 [2020-08-22 04:28:46,766 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 04:28:46,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:28:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 04:28:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-22 04:28:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 04:28:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2020-08-22 04:28:46,824 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 57 [2020-08-22 04:28:46,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:46,824 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2020-08-22 04:28:46,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:28:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2020-08-22 04:28:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 04:28:46,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:46,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:46,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:28:46,828 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:46,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1819519357, now seen corresponding path program 1 times [2020-08-22 04:28:46,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:46,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037986892] [2020-08-22 04:28:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,165 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:28:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:28:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 04:28:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:47,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037986892] [2020-08-22 04:28:47,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:47,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:28:47,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040981295] [2020-08-22 04:28:47,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:28:47,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:47,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:28:47,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:28:47,266 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 7 states. [2020-08-22 04:28:47,665 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:48,925 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:49,885 INFO L93 Difference]: Finished difference Result 418 states and 526 transitions. [2020-08-22 04:28:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:28:49,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-22 04:28:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:49,890 INFO L225 Difference]: With dead ends: 418 [2020-08-22 04:28:49,890 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 04:28:49,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:28:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 04:28:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 247. [2020-08-22 04:28:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-22 04:28:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 282 transitions. [2020-08-22 04:28:49,943 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 282 transitions. Word has length 75 [2020-08-22 04:28:49,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:49,943 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 282 transitions. [2020-08-22 04:28:49,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:28:49,944 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 282 transitions. [2020-08-22 04:28:49,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 04:28:49,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:49,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:49,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:28:49,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:49,947 INFO L82 PathProgramCache]: Analyzing trace with hash 948942276, now seen corresponding path program 1 times [2020-08-22 04:28:49,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:49,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697910002] [2020-08-22 04:28:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,246 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:28:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:28:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:28:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:50,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697910002] [2020-08-22 04:28:50,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:50,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:28:50,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347738777] [2020-08-22 04:28:50,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:28:50,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:50,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:28:50,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:28:50,387 INFO L87 Difference]: Start difference. First operand 247 states and 282 transitions. Second operand 9 states. [2020-08-22 04:28:50,759 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:51,879 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:52,265 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:52,842 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:53,077 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:54,429 INFO L93 Difference]: Finished difference Result 737 states and 912 transitions. [2020-08-22 04:28:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:28:54,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-22 04:28:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:54,434 INFO L225 Difference]: With dead ends: 737 [2020-08-22 04:28:54,435 INFO L226 Difference]: Without dead ends: 518 [2020-08-22 04:28:54,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:28:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-22 04:28:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 442. [2020-08-22 04:28:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-22 04:28:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 504 transitions. [2020-08-22 04:28:54,515 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 504 transitions. Word has length 89 [2020-08-22 04:28:54,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:54,516 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 504 transitions. [2020-08-22 04:28:54,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:28:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 504 transitions. [2020-08-22 04:28:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 04:28:54,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:54,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:54,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:28:54,519 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:54,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1944159016, now seen corresponding path program 1 times [2020-08-22 04:28:54,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:54,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302428454] [2020-08-22 04:28:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,820 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:28:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 04:28:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 04:28:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:54,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302428454] [2020-08-22 04:28:54,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:54,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:28:54,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231626417] [2020-08-22 04:28:54,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:28:54,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:54,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:28:54,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:28:54,981 INFO L87 Difference]: Start difference. First operand 442 states and 504 transitions. Second operand 10 states. [2020-08-22 04:28:55,393 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:56,651 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:57,933 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:58,166 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:58,421 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:58,862 INFO L93 Difference]: Finished difference Result 970 states and 1183 transitions. [2020-08-22 04:28:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 04:28:58,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-22 04:28:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:58,873 INFO L225 Difference]: With dead ends: 970 [2020-08-22 04:28:58,873 INFO L226 Difference]: Without dead ends: 556 [2020-08-22 04:28:58,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-22 04:28:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-08-22 04:28:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 441. [2020-08-22 04:28:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-08-22 04:28:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 501 transitions. [2020-08-22 04:28:59,040 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 501 transitions. Word has length 93 [2020-08-22 04:28:59,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:59,041 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 501 transitions. [2020-08-22 04:28:59,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:28:59,041 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 501 transitions. [2020-08-22 04:28:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 04:28:59,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:59,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:59,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:28:59,044 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:59,044 INFO L82 PathProgramCache]: Analyzing trace with hash -412136482, now seen corresponding path program 1 times [2020-08-22 04:28:59,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:59,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788963260] [2020-08-22 04:28:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,287 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:59,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:28:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 04:28:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:28:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:28:59,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788963260] [2020-08-22 04:28:59,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:59,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:28:59,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709354158] [2020-08-22 04:28:59,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:28:59,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:28:59,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:28:59,483 INFO L87 Difference]: Start difference. First operand 441 states and 501 transitions. Second operand 10 states. [2020-08-22 04:29:00,642 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:00,900 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 04:29:01,135 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:01,374 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:02,738 INFO L93 Difference]: Finished difference Result 977 states and 1216 transitions. [2020-08-22 04:29:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:29:02,740 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-08-22 04:29:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:02,744 INFO L225 Difference]: With dead ends: 977 [2020-08-22 04:29:02,744 INFO L226 Difference]: Without dead ends: 564 [2020-08-22 04:29:02,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:29:02,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-22 04:29:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 451. [2020-08-22 04:29:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-22 04:29:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 511 transitions. [2020-08-22 04:29:02,831 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 511 transitions. Word has length 109 [2020-08-22 04:29:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:02,831 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 511 transitions. [2020-08-22 04:29:02,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:29:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 511 transitions. [2020-08-22 04:29:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 04:29:02,833 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:02,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:02,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:29:02,834 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:02,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1527025564, now seen corresponding path program 1 times [2020-08-22 04:29:02,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:02,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482586295] [2020-08-22 04:29:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,093 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:29:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 04:29:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:29:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:29:03,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482586295] [2020-08-22 04:29:03,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:03,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:29:03,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330948214] [2020-08-22 04:29:03,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:29:03,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:03,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:29:03,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:29:03,302 INFO L87 Difference]: Start difference. First operand 451 states and 511 transitions. Second operand 12 states. [2020-08-22 04:29:03,818 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:04,050 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:04,276 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:04,974 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:05,220 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:05,462 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:07,080 INFO L93 Difference]: Finished difference Result 997 states and 1238 transitions. [2020-08-22 04:29:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:29:07,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-22 04:29:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:07,085 INFO L225 Difference]: With dead ends: 997 [2020-08-22 04:29:07,086 INFO L226 Difference]: Without dead ends: 574 [2020-08-22 04:29:07,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:29:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-08-22 04:29:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 459. [2020-08-22 04:29:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-22 04:29:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2020-08-22 04:29:07,183 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 109 [2020-08-22 04:29:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:07,184 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2020-08-22 04:29:07,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:29:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2020-08-22 04:29:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 04:29:07,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:07,188 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:07,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:29:07,188 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1998771717, now seen corresponding path program 1 times [2020-08-22 04:29:07,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:07,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128812172] [2020-08-22 04:29:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,522 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:29:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 04:29:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:29:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:29:07,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128812172] [2020-08-22 04:29:07,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:07,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:07,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320330787] [2020-08-22 04:29:07,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:07,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:07,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:07,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:07,862 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand 8 states. [2020-08-22 04:29:08,366 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:09,125 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:11,880 INFO L93 Difference]: Finished difference Result 1365 states and 1751 transitions. [2020-08-22 04:29:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 04:29:11,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-08-22 04:29:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:11,887 INFO L225 Difference]: With dead ends: 1365 [2020-08-22 04:29:11,888 INFO L226 Difference]: Without dead ends: 934 [2020-08-22 04:29:11,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-22 04:29:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-08-22 04:29:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 789. [2020-08-22 04:29:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-22 04:29:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 921 transitions. [2020-08-22 04:29:12,011 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 921 transitions. Word has length 109 [2020-08-22 04:29:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:12,011 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 921 transitions. [2020-08-22 04:29:12,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:29:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 921 transitions. [2020-08-22 04:29:12,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-22 04:29:12,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:12,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:12,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:29:12,014 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:12,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:12,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1262789055, now seen corresponding path program 1 times [2020-08-22 04:29:12,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:12,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791138894] [2020-08-22 04:29:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,341 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:12,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:29:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 04:29:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 04:29:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:29:12,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791138894] [2020-08-22 04:29:12,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:29:12,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 04:29:12,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917791754] [2020-08-22 04:29:12,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 04:29:12,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:12,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 04:29:12,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:29:12,774 INFO L87 Difference]: Start difference. First operand 789 states and 921 transitions. Second operand 18 states. [2020-08-22 04:29:13,268 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:13,616 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:13,889 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:14,174 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:14,908 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:16,102 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:16,453 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:16,761 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:17,053 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:17,430 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:17,727 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:18,287 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-22 04:29:18,865 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-22 04:29:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:21,886 INFO L93 Difference]: Finished difference Result 1665 states and 2044 transitions. [2020-08-22 04:29:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 04:29:21,891 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-08-22 04:29:21,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:21,896 INFO L225 Difference]: With dead ends: 1665 [2020-08-22 04:29:21,897 INFO L226 Difference]: Without dead ends: 904 [2020-08-22 04:29:21,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 04:29:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-08-22 04:29:22,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 768. [2020-08-22 04:29:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-08-22 04:29:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 886 transitions. [2020-08-22 04:29:22,067 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 886 transitions. Word has length 113 [2020-08-22 04:29:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:22,067 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 886 transitions. [2020-08-22 04:29:22,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 04:29:22,068 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 886 transitions. [2020-08-22 04:29:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-22 04:29:22,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:22,073 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:22,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:29:22,073 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1271659967, now seen corresponding path program 1 times [2020-08-22 04:29:22,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:22,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070617355] [2020-08-22 04:29:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,442 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:29:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:29:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 04:29:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 04:29:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 04:29:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:29:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:29:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-22 04:29:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 04:29:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-22 04:29:22,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070617355] [2020-08-22 04:29:22,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:29:22,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 04:29:22,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193179555] [2020-08-22 04:29:22,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 04:29:22,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:22,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 04:29:22,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:29:22,830 INFO L87 Difference]: Start difference. First operand 768 states and 886 transitions. Second operand 19 states. [2020-08-22 04:29:23,451 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:23,804 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:24,098 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:24,345 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:25,045 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:26,153 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:26,504 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:26,786 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:27,060 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:27,389 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:27,688 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:29,029 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:29,292 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:29,587 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:29,885 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:31,191 INFO L93 Difference]: Finished difference Result 1426 states and 1761 transitions. [2020-08-22 04:29:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 04:29:31,191 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 183 [2020-08-22 04:29:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:31,194 INFO L225 Difference]: With dead ends: 1426 [2020-08-22 04:29:31,194 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 04:29:31,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 04:29:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 04:29:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 04:29:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 04:29:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 04:29:31,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2020-08-22 04:29:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:31,204 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 04:29:31,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 04:29:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 04:29:31,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 04:29:31,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:29:31,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 04:29:32,585 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-22 04:29:33,628 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-22 04:29:34,985 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-22 04:29:35,379 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2020-08-22 04:29:35,917 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204