/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:12:07,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:12:07,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:12:07,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:12:07,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:12:07,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:12:07,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:12:07,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:12:07,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:12:07,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:12:07,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:12:07,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:12:07,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:12:07,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:12:07,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:12:07,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:12:07,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:12:07,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:12:07,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:12:07,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:12:07,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:12:07,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:12:07,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:12:07,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:12:07,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:12:07,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:12:07,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:12:07,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:12:07,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:12:07,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:12:07,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:12:07,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:12:07,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:12:07,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:12:07,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:12:07,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:12:07,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:12:07,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:12:07,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:12:07,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:12:07,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:12:07,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:12:07,863 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:12:07,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:12:07,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:12:07,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:12:07,869 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:12:07,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:12:07,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:12:07,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:12:07,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:12:07,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:12:07,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:12:07,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:12:07,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:12:07,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:12:07,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:12:07,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:12:07,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:12:07,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:12:07,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:12:07,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:12:07,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:12:07,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:12:07,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:12:07,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:12:07,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:12:07,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:12:07,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:12:07,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:12:07,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:12:07,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:12:08,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:12:08,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:12:08,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:12:08,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:12:08,185 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:12:08,186 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 04:12:08,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5be967c8/15ea8ddf5f6f4788b08733dc4d54531a/FLAGf0e301319 [2020-08-19 04:12:08,744 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:12:08,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 04:12:08,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5be967c8/15ea8ddf5f6f4788b08733dc4d54531a/FLAGf0e301319 [2020-08-19 04:12:09,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5be967c8/15ea8ddf5f6f4788b08733dc4d54531a [2020-08-19 04:12:09,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:12:09,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:12:09,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:12:09,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:12:09,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:12:09,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3798bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09, skipping insertion in model container [2020-08-19 04:12:09,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:12:09,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:12:09,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:12:09,594 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:12:09,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:12:09,736 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:12:09,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09 WrapperNode [2020-08-19 04:12:09,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:12:09,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:12:09,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:12:09,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:12:09,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (1/1) ... [2020-08-19 04:12:09,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:12:09,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:12:09,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:12:09,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:12:09,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:12:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:12:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:12:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:12:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:12:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:12:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:12:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:12:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:12:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:12:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:12:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:12:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:12:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:12:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:12:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:12:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:12:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:12:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:12:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 04:12:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 04:12:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:12:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:12:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:12:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:12:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:12:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:12:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:12:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:12:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:12:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:12:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:12:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:12:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 04:12:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:12:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:12:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:12:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:12:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:12:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:12:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:12:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:12:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:12:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:12:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:12:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:12:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:12:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:12:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:12:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:12:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:12:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:12:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:12:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:12:09,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:12:09,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:12:09,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:12:09,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:12:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:12:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:12:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:12:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:12:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:12:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:12:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:12:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:12:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:12:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:12:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:12:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:12:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:12:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:12:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:12:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:12:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:12:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 04:12:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 04:12:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:12:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:12:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:12:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:12:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 04:12:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:12:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:12:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:12:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:12:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:12:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:12:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:12:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:12:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:12:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:12:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:12:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:12:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:12:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:12:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:12:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:12:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:12:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:12:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:12:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:12:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:12:11,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:12:11,336 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:12:11,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:12:11 BoogieIcfgContainer [2020-08-19 04:12:11,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:12:11,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:12:11,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:12:11,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:12:11,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:12:09" (1/3) ... [2020-08-19 04:12:11,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d20b96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:12:11, skipping insertion in model container [2020-08-19 04:12:11,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:09" (2/3) ... [2020-08-19 04:12:11,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d20b96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:12:11, skipping insertion in model container [2020-08-19 04:12:11,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:12:11" (3/3) ... [2020-08-19 04:12:11,350 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-19 04:12:11,361 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:12:11,369 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:12:11,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:12:11,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:12:11,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:12:11,411 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:12:11,411 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:12:11,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:12:11,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:12:11,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:12:11,412 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:12:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-19 04:12:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:12:11,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:11,450 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] [2020-08-19 04:12:11,450 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:11,457 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-19 04:12:11,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:11,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328126224] [2020-08-19 04:12:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,164 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:12:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:12:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:12,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328126224] [2020-08-19 04:12:12,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:12,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:12:12,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284780484] [2020-08-19 04:12:12,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:12:12,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:12,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:12:12,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:12:12,312 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-19 04:12:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:13,734 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-19 04:12:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:12:13,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 04:12:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:13,752 INFO L225 Difference]: With dead ends: 353 [2020-08-19 04:12:13,752 INFO L226 Difference]: Without dead ends: 196 [2020-08-19 04:12:13,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:12:13,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-19 04:12:13,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-19 04:12:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-19 04:12:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-19 04:12:13,865 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-19 04:12:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:13,866 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-19 04:12:13,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:12:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-19 04:12:13,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:12:13,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:13,873 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] [2020-08-19 04:12:13,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:12:13,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:13,874 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-19 04:12:13,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:13,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869939127] [2020-08-19 04:12:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,188 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:14,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:12:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:12:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:14,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869939127] [2020-08-19 04:12:14,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:14,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:12:14,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164171921] [2020-08-19 04:12:14,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:12:14,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:14,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:12:14,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:12:14,272 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-19 04:12:14,837 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:15,959 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-19 04:12:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 04:12:15,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 04:12:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:15,967 INFO L225 Difference]: With dead ends: 288 [2020-08-19 04:12:15,967 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 04:12:15,969 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 [2020-08-19 04:12:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 04:12:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-19 04:12:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 04:12:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-19 04:12:16,020 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-19 04:12:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:16,021 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-19 04:12:16,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:12:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-19 04:12:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:12:16,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:16,024 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] [2020-08-19 04:12:16,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:12:16,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:16,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-19 04:12:16,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:16,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522388583] [2020-08-19 04:12:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,375 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:12:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:12:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:16,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:16,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522388583] [2020-08-19 04:12:16,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:16,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:12:16,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443248824] [2020-08-19 04:12:16,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:12:16,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:16,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:12:16,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:12:16,475 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-19 04:12:16,860 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:17,192 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:17,437 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:17,696 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:18,504 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:20,892 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-19 04:12:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:12:20,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 04:12:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:20,898 INFO L225 Difference]: With dead ends: 503 [2020-08-19 04:12:20,898 INFO L226 Difference]: Without dead ends: 382 [2020-08-19 04:12:20,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:12:20,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-19 04:12:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-19 04:12:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-19 04:12:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-19 04:12:20,982 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-19 04:12:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:20,983 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-19 04:12:20,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:12:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-19 04:12:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 04:12:20,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:20,986 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] [2020-08-19 04:12:20,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:12:20,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-19 04:12:20,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:20,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506666426] [2020-08-19 04:12:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,280 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:21,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:12:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:12:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 04:12:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:21,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506666426] [2020-08-19 04:12:21,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:21,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:12:21,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557366001] [2020-08-19 04:12:21,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:12:21,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:21,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:12:21,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:12:21,424 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-19 04:12:21,753 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:22,758 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:23,237 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:23,499 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:23,734 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:25,640 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-19 04:12:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 04:12:25,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 04:12:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:25,648 INFO L225 Difference]: With dead ends: 992 [2020-08-19 04:12:25,649 INFO L226 Difference]: Without dead ends: 711 [2020-08-19 04:12:25,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 04:12:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-19 04:12:25,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-19 04:12:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-19 04:12:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-19 04:12:25,808 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-19 04:12:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:25,808 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-19 04:12:25,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:12:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-19 04:12:25,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 04:12:25,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:25,812 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] [2020-08-19 04:12:25,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:12:25,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:25,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:25,813 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-19 04:12:25,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:25,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072578226] [2020-08-19 04:12:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,105 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:26,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:12:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:12:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 04:12:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 04:12:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:26,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072578226] [2020-08-19 04:12:26,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:26,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:12:26,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324055868] [2020-08-19 04:12:26,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:12:26,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:26,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:12:26,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:12:26,230 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-19 04:12:26,625 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:27,739 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:28,058 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:28,298 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:28,987 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:30,493 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-19 04:12:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 04:12:30,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 04:12:30,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:30,505 INFO L225 Difference]: With dead ends: 1565 [2020-08-19 04:12:30,505 INFO L226 Difference]: Without dead ends: 1027 [2020-08-19 04:12:30,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:12:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-19 04:12:30,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-19 04:12:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 04:12:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-19 04:12:30,719 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-19 04:12:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:30,721 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-19 04:12:30,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:12:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-19 04:12:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 04:12:30,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:30,726 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, 1] [2020-08-19 04:12:30,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:12:30,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:30,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-19 04:12:30,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:30,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024988484] [2020-08-19 04:12:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,031 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:31,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:12:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:12:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 04:12:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 04:12:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:31,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024988484] [2020-08-19 04:12:31,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:31,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:12:31,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437517996] [2020-08-19 04:12:31,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:12:31,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:31,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:12:31,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:12:31,257 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-19 04:12:32,361 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:32,627 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:12:32,886 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:33,146 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:34,491 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-19 04:12:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:12:34,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-19 04:12:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:34,503 INFO L225 Difference]: With dead ends: 1894 [2020-08-19 04:12:34,503 INFO L226 Difference]: Without dead ends: 1101 [2020-08-19 04:12:34,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:12:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-19 04:12:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-19 04:12:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-19 04:12:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-19 04:12:34,759 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-19 04:12:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:34,760 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-19 04:12:34,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:12:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-19 04:12:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 04:12:34,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:34,769 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, 1] [2020-08-19 04:12:34,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:12:34,770 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:34,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:34,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-19 04:12:34,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:34,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906237463] [2020-08-19 04:12:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,124 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:12:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:12:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 04:12:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 04:12:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:35,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906237463] [2020-08-19 04:12:35,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:35,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:12:35,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6863304] [2020-08-19 04:12:35,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:12:35,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:35,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:12:35,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:12:35,265 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-19 04:12:35,670 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:35,909 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:36,153 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:37,034 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:37,316 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:37,570 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:39,167 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-19 04:12:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:12:39,167 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 04:12:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:39,177 INFO L225 Difference]: With dead ends: 1948 [2020-08-19 04:12:39,177 INFO L226 Difference]: Without dead ends: 1129 [2020-08-19 04:12:39,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 04:12:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-19 04:12:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-19 04:12:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-19 04:12:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-19 04:12:39,515 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-19 04:12:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:39,515 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-19 04:12:39,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:12:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-19 04:12:39,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 04:12:39,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:39,518 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, 1] [2020-08-19 04:12:39,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:12:39,519 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:39,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-19 04:12:39,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:39,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566722885] [2020-08-19 04:12:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,839 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:12:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:12:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 04:12:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 04:12:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:40,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566722885] [2020-08-19 04:12:40,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:40,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:12:40,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557303840] [2020-08-19 04:12:40,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:12:40,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:40,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:12:40,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:12:40,010 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-19 04:12:40,320 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:40,888 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:44,074 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-19 04:12:44,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 04:12:44,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 04:12:44,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:44,091 INFO L225 Difference]: With dead ends: 2919 [2020-08-19 04:12:44,091 INFO L226 Difference]: Without dead ends: 2084 [2020-08-19 04:12:44,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 04:12:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-19 04:12:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-19 04:12:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-19 04:12:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-19 04:12:44,446 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-19 04:12:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:44,447 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-19 04:12:44,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:12:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-19 04:12:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 04:12:44,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:44,452 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, 1, 1, 1, 1, 1] [2020-08-19 04:12:44,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:12:44,453 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:44,453 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-19 04:12:44,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:44,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296062849] [2020-08-19 04:12:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,768 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:44,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:12:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:12:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:12:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 04:12:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:12:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:44,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296062849] [2020-08-19 04:12:44,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:44,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:12:44,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400031494] [2020-08-19 04:12:44,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:12:44,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:44,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:12:44,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:12:44,913 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-19 04:12:45,248 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:48,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:48,607 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-19 04:12:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 04:12:48,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-19 04:12:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:48,633 INFO L225 Difference]: With dead ends: 3491 [2020-08-19 04:12:48,633 INFO L226 Difference]: Without dead ends: 3488 [2020-08-19 04:12:48,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:12:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-19 04:12:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-19 04:12:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-19 04:12:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-19 04:12:49,283 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-19 04:12:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:49,285 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-19 04:12:49,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:12:49,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-19 04:12:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-19 04:12:49,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:49,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:49,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:12:49,301 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:49,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2137087651, now seen corresponding path program 1 times [2020-08-19 04:12:49,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:49,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915928267] [2020-08-19 04:12:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,733 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:49,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:12:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:12:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:12:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:12:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:12:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 04:12:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:49,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:12:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:50,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 04:12:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 04:12:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-19 04:12:50,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915928267] [2020-08-19 04:12:50,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:12:50,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 04:12:50,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040290771] [2020-08-19 04:12:50,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 04:12:50,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:50,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 04:12:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:12:50,095 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 14 states. [2020-08-19 04:12:50,877 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:51,105 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:51,356 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:51,929 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:53,510 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:55,812 INFO L93 Difference]: Finished difference Result 5611 states and 7325 transitions. [2020-08-19 04:12:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 04:12:55,813 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2020-08-19 04:12:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:55,832 INFO L225 Difference]: With dead ends: 5611 [2020-08-19 04:12:55,832 INFO L226 Difference]: Without dead ends: 3113 [2020-08-19 04:12:55,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=364, Invalid=1528, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 04:12:55,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-08-19 04:12:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 2736. [2020-08-19 04:12:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-08-19 04:12:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3204 transitions. [2020-08-19 04:12:56,372 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3204 transitions. Word has length 166 [2020-08-19 04:12:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:56,372 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3204 transitions. [2020-08-19 04:12:56,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 04:12:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3204 transitions. [2020-08-19 04:12:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-19 04:12:56,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:56,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:56,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:12:56,381 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:56,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-19 04:12:56,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:56,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857474694] [2020-08-19 04:12:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,698 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:56,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:12:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:12:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:12:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:12:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:12:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 04:12:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 04:12:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-19 04:12:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 04:12:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 04:12:56,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857474694] [2020-08-19 04:12:56,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:12:56,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 04:12:56,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990015525] [2020-08-19 04:12:56,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:12:56,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:56,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:12:56,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:12:56,962 INFO L87 Difference]: Start difference. First operand 2736 states and 3204 transitions. Second operand 10 states. [2020-08-19 04:12:58,375 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:13:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:00,937 INFO L93 Difference]: Finished difference Result 4533 states and 5525 transitions. [2020-08-19 04:13:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 04:13:00,938 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-19 04:13:00,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:00,951 INFO L225 Difference]: With dead ends: 4533 [2020-08-19 04:13:00,951 INFO L226 Difference]: Without dead ends: 1835 [2020-08-19 04:13:00,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 04:13:00,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-19 04:13:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1269. [2020-08-19 04:13:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-19 04:13:01,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1471 transitions. [2020-08-19 04:13:01,205 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1471 transitions. Word has length 171 [2020-08-19 04:13:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:01,206 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1471 transitions. [2020-08-19 04:13:01,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:13:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1471 transitions. [2020-08-19 04:13:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-19 04:13:01,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:01,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:13:01,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:13:01,212 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:01,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:01,212 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-19 04:13:01,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:01,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833446924] [2020-08-19 04:13:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,520 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:01,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:13:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:13:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:13:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:13:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:13:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:13:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:13:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 04:13:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:13:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:13:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:13:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 04:13:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 04:13:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 04:13:01,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833446924] [2020-08-19 04:13:01,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:13:01,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 04:13:01,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409330399] [2020-08-19 04:13:01,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 04:13:01,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:01,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 04:13:01,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:13:01,986 INFO L87 Difference]: Start difference. First operand 1269 states and 1471 transitions. Second operand 19 states. [2020-08-19 04:13:02,687 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:13:03,070 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:13:03,318 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:13:03,581 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:13:04,334 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:13:05,031 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:13:05,436 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191