/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=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:22:42,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:22:42,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:22:42,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:22:42,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:22:42,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:22:42,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:22:42,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:22:42,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:22:42,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:22:42,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:22:42,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:22:42,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:22:42,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:22:42,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:22:42,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:22:42,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:22:42,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:22:42,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:22:42,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:22:42,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:22:42,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:22:42,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:22:42,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:22:42,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:22:42,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:22:42,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:22:42,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:22:42,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:22:42,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:22:42,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:22:42,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:22:42,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:22:42,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:22:42,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:22:42,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:22:42,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:22:42,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:22:42,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:22:42,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:22:42,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:22:42,662 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 03:22:42,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:22:42,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:22:42,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:22:42,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:22:42,686 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:22:42,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:22:42,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:22:42,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:22:42,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:22:42,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:22:42,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:22:42,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:22:42,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:22:42,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:22:42,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:22:42,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:22:42,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:22:42,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:22:42,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:22:42,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:22:42,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:22:42,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:22:42,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:22:42,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:22:42,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:22:42,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:22:42,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:22:42,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:22:42,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:22:42,691 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=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:22:43,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:22:43,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:22:43,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:22:43,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:22:43,030 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:22:43,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-19 03:22:43,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82768c6df/9fd7cfb3e84d4561a447ffca61572cce/FLAG1b22efb8e [2020-08-19 03:22:43,596 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:22:43,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-19 03:22:43,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82768c6df/9fd7cfb3e84d4561a447ffca61572cce/FLAG1b22efb8e [2020-08-19 03:22:43,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82768c6df/9fd7cfb3e84d4561a447ffca61572cce [2020-08-19 03:22:43,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:22:43,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:22:43,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:22:43,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:22:43,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:22:43,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:22:43" (1/1) ... [2020-08-19 03:22:43,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:43, skipping insertion in model container [2020-08-19 03:22:43,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:22:43" (1/1) ... [2020-08-19 03:22:43,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:22:44,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:22:44,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:22:44,492 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:22:44,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:22:44,615 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:22:44,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44 WrapperNode [2020-08-19 03:22:44,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:22:44,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:22:44,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:22:44,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:22:44,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (1/1) ... [2020-08-19 03:22:44,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (1/1) ... [2020-08-19 03:22:44,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (1/1) ... [2020-08-19 03:22:44,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (1/1) ... [2020-08-19 03:22:44,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (1/1) ... [2020-08-19 03:22:44,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (1/1) ... [2020-08-19 03:22:44,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (1/1) ... [2020-08-19 03:22:44,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:22:44,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:22:44,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:22:44,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:22:44,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (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 03:22:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:22:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:22:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:22:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:22:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:22:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:22:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:22:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:22:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:22:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:22:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:22:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:22:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:22:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:22:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:22:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:22:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:22:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:22:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:22:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:22:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 03:22:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:22:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:22:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:22:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:22:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:22:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:22:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:22:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:22:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:22:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:22:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:22:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:22:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:22:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:22:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:22:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:22:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:22:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:22:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:22:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:22:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:22:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:22:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:22:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:22:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:22:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:22:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:22:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:22:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:22:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:22:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:22:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:22:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:22:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:22:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:22:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:22:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:22:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:22:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 03:22:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:22:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:22:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:22:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:22:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:22:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:22:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:22:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:22:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:22:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:22:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:22:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:22:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:22:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:22:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:22:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:22:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:22:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:22:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:22:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:22:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:22:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:22:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:22:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:22:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:22:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:22:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:22:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:22:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:22:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:22:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:22:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:22:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:22:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:22:47,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:22:47,880 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:22:47,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:22:47 BoogieIcfgContainer [2020-08-19 03:22:47,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:22:47,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:22:47,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:22:47,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:22:47,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:22:43" (1/3) ... [2020-08-19 03:22:47,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0991f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:22:47, skipping insertion in model container [2020-08-19 03:22:47,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:44" (2/3) ... [2020-08-19 03:22:47,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0991f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:22:47, skipping insertion in model container [2020-08-19 03:22:47,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:22:47" (3/3) ... [2020-08-19 03:22:47,895 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product38.cil.c [2020-08-19 03:22:47,906 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:22:47,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:22:47,928 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:22:47,953 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:22:47,953 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:22:47,953 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:22:47,953 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:22:47,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:22:47,954 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:22:47,954 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:22:47,954 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:22:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 03:22:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:22:47,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:22:47,986 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] [2020-08-19 03:22:47,986 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:22:47,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:22:47,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1698741088, now seen corresponding path program 1 times [2020-08-19 03:22:48,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:22:48,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030358090] [2020-08-19 03:22:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:22:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,638 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:22:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:22:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:22:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:22:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:22:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:22:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:22:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:22:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:22:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:48,768 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 03:22:48,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030358090] [2020-08-19 03:22:48,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:22:48,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:22:48,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863458717] [2020-08-19 03:22:48,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:22:48,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:22:48,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:22:48,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:22:48,794 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-08-19 03:22:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:22:49,989 INFO L93 Difference]: Finished difference Result 296 states and 387 transitions. [2020-08-19 03:22:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:22:49,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 03:22:49,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:22:50,006 INFO L225 Difference]: With dead ends: 296 [2020-08-19 03:22:50,006 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 03:22:50,011 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 03:22:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 03:22:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-19 03:22:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 03:22:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-19 03:22:50,107 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 51 [2020-08-19 03:22:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:22:50,108 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-19 03:22:50,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:22:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-19 03:22:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:22:50,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:22:50,112 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 03:22:50,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:22:50,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:22:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:22:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 160126664, now seen corresponding path program 1 times [2020-08-19 03:22:50,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:22:50,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335460885] [2020-08-19 03:22:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:22:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,494 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:22:50,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:22:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:22:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:22:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:22:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:22:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:22:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:22:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:22:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:50,591 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 03:22:50,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335460885] [2020-08-19 03:22:50,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:22:50,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:22:50,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545303636] [2020-08-19 03:22:50,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:22:50,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:22:50,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:22:50,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:22:50,596 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 5 states. [2020-08-19 03:22:51,104 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:22:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:22:51,998 INFO L93 Difference]: Finished difference Result 237 states and 294 transitions. [2020-08-19 03:22:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:22:51,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 03:22:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:22:52,004 INFO L225 Difference]: With dead ends: 237 [2020-08-19 03:22:52,004 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 03:22:52,006 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 03:22:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 03:22:52,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 03:22:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 03:22:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-19 03:22:52,080 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 52 [2020-08-19 03:22:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:22:52,081 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-19 03:22:52,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:22:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-19 03:22:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:22:52,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:22:52,094 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 03:22:52,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:22:52,095 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:22:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:22:52,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1051645430, now seen corresponding path program 1 times [2020-08-19 03:22:52,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:22:52,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779139405] [2020-08-19 03:22:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:22:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,515 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:22:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:22:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:22:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:22:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:22:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:22:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:22:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:22:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:22:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:52,635 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 03:22:52,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779139405] [2020-08-19 03:22:52,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:22:52,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:22:52,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265880804] [2020-08-19 03:22:52,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:22:52,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:22:52,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:22:52,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:22:52,644 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 9 states. [2020-08-19 03:22:53,119 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:22:53,479 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:22:53,741 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:22:53,989 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:22:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:22:55,263 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2020-08-19 03:22:55,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:22:55,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 03:22:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:22:55,269 INFO L225 Difference]: With dead ends: 250 [2020-08-19 03:22:55,269 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 03:22:55,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:22:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 03:22:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 03:22:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 03:22:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-19 03:22:55,345 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 57 [2020-08-19 03:22:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:22:55,347 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-19 03:22:55,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:22:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-19 03:22:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 03:22:55,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:22:55,352 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] [2020-08-19 03:22:55,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:22:55,353 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:22:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:22:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash 23828646, now seen corresponding path program 1 times [2020-08-19 03:22:55,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:22:55,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555066092] [2020-08-19 03:22:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:22:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,692 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:22:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:22:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:22:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:22:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:22:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:22:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:22:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:22:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:22:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:22:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 03:22:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 03:22:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:55,802 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 03:22:55,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555066092] [2020-08-19 03:22:55,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:22:55,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:22:55,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046870649] [2020-08-19 03:22:55,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:22:55,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:22:55,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:22:55,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:22:55,805 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2020-08-19 03:22:56,242 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:22:57,536 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:22:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:22:58,283 INFO L93 Difference]: Finished difference Result 349 states and 441 transitions. [2020-08-19 03:22:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:22:58,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-19 03:22:58,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:22:58,288 INFO L225 Difference]: With dead ends: 349 [2020-08-19 03:22:58,289 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 03:22:58,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:22:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 03:22:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-19 03:22:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 03:22:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-08-19 03:22:58,341 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 70 [2020-08-19 03:22:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:22:58,342 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-08-19 03:22:58,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:22:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-08-19 03:22:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 03:22:58,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:22:58,344 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] [2020-08-19 03:22:58,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:22:58,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:22:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:22:58,344 INFO L82 PathProgramCache]: Analyzing trace with hash 765865706, now seen corresponding path program 1 times [2020-08-19 03:22:58,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:22:58,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436010515] [2020-08-19 03:22:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:22:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,619 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:22:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:22:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:22:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:22:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:22:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:22:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:22:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:22:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:22:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:22:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:22:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:22:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 03:22:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:22:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:22:58,715 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 03:22:58,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436010515] [2020-08-19 03:22:58,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:22:58,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:22:58,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102772540] [2020-08-19 03:22:58,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:22:58,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:22:58,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:22:58,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:22:58,717 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 9 states. [2020-08-19 03:22:59,324 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:00,515 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:00,785 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:01,057 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:01,283 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:02,447 INFO L93 Difference]: Finished difference Result 611 states and 771 transitions. [2020-08-19 03:23:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 03:23:02,448 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 03:23:02,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:02,452 INFO L225 Difference]: With dead ends: 611 [2020-08-19 03:23:02,452 INFO L226 Difference]: Without dead ends: 434 [2020-08-19 03:23:02,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 03:23:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-19 03:23:02,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 358. [2020-08-19 03:23:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-08-19 03:23:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2020-08-19 03:23:02,534 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 84 [2020-08-19 03:23:02,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:02,535 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2020-08-19 03:23:02,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:23:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2020-08-19 03:23:02,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:23:02,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:02,537 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] [2020-08-19 03:23:02,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:23:02,538 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:02,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:02,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1305842374, now seen corresponding path program 1 times [2020-08-19 03:23:02,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:02,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707578323] [2020-08-19 03:23:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,796 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 03:23:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:23:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,958 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 03:23:02,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707578323] [2020-08-19 03:23:02,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:02,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:23:02,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251672869] [2020-08-19 03:23:02,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:23:02,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:02,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:23:02,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:23:02,961 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand 10 states. [2020-08-19 03:23:03,512 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:04,699 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:04,941 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:05,193 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:05,477 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:06,543 INFO L93 Difference]: Finished difference Result 802 states and 995 transitions. [2020-08-19 03:23:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:23:06,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 03:23:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:06,548 INFO L225 Difference]: With dead ends: 802 [2020-08-19 03:23:06,548 INFO L226 Difference]: Without dead ends: 472 [2020-08-19 03:23:06,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:23:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-19 03:23:06,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 357. [2020-08-19 03:23:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-19 03:23:06,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-08-19 03:23:06,621 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 88 [2020-08-19 03:23:06,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:06,622 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-08-19 03:23:06,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:23:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-08-19 03:23:06,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 03:23:06,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:06,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:06,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:23:06,624 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:06,625 INFO L82 PathProgramCache]: Analyzing trace with hash -638509814, now seen corresponding path program 1 times [2020-08-19 03:23:06,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:06,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978195970] [2020-08-19 03:23:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,889 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:23:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:23:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,018 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 03:23:07,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978195970] [2020-08-19 03:23:07,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:07,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:23:07,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359511720] [2020-08-19 03:23:07,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:23:07,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:23:07,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:23:07,021 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 10 states. [2020-08-19 03:23:08,220 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:08,483 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:23:08,723 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:08,972 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:09,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:09,880 INFO L93 Difference]: Finished difference Result 805 states and 1004 transitions. [2020-08-19 03:23:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:23:09,882 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 03:23:09,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:09,888 INFO L225 Difference]: With dead ends: 805 [2020-08-19 03:23:09,888 INFO L226 Difference]: Without dead ends: 476 [2020-08-19 03:23:09,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:23:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-19 03:23:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 367. [2020-08-19 03:23:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-19 03:23:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-19 03:23:09,988 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 89 [2020-08-19 03:23:09,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:09,989 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-19 03:23:09,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:23:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-19 03:23:09,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 03:23:09,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:09,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:09,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:23:09,991 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:09,992 INFO L82 PathProgramCache]: Analyzing trace with hash 63090060, now seen corresponding path program 1 times [2020-08-19 03:23:09,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:09,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700932637] [2020-08-19 03:23:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,276 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:10,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:23:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:23:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,474 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 03:23:10,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700932637] [2020-08-19 03:23:10,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:10,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:23:10,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185457852] [2020-08-19 03:23:10,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:23:10,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:10,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:23:10,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:23:10,482 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 12 states. [2020-08-19 03:23:11,537 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:11,771 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:12,010 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:12,714 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:12,997 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:13,248 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:14,305 INFO L93 Difference]: Finished difference Result 829 states and 1046 transitions. [2020-08-19 03:23:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:23:14,305 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-19 03:23:14,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:14,309 INFO L225 Difference]: With dead ends: 829 [2020-08-19 03:23:14,309 INFO L226 Difference]: Without dead ends: 490 [2020-08-19 03:23:14,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 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 03:23:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-19 03:23:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 375. [2020-08-19 03:23:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-19 03:23:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 425 transitions. [2020-08-19 03:23:14,391 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 425 transitions. Word has length 89 [2020-08-19 03:23:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:14,392 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 425 transitions. [2020-08-19 03:23:14,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:23:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 425 transitions. [2020-08-19 03:23:14,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 03:23:14,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:14,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:14,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:23:14,394 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:14,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1788570957, now seen corresponding path program 1 times [2020-08-19 03:23:14,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:14,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034644597] [2020-08-19 03:23:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,639 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:14,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:23:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:23:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,819 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 03:23:14,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034644597] [2020-08-19 03:23:14,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:14,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:23:14,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035928830] [2020-08-19 03:23:14,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:23:14,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:14,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:23:14,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:23:14,822 INFO L87 Difference]: Start difference. First operand 375 states and 425 transitions. Second operand 8 states. [2020-08-19 03:23:15,280 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:15,830 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:18,272 INFO L93 Difference]: Finished difference Result 1177 states and 1533 transitions. [2020-08-19 03:23:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:23:18,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-19 03:23:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:18,278 INFO L225 Difference]: With dead ends: 1177 [2020-08-19 03:23:18,279 INFO L226 Difference]: Without dead ends: 830 [2020-08-19 03:23:18,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 03:23:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-19 03:23:18,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 685. [2020-08-19 03:23:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-19 03:23:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 803 transitions. [2020-08-19 03:23:18,462 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 803 transitions. Word has length 89 [2020-08-19 03:23:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:18,464 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 803 transitions. [2020-08-19 03:23:18,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:23:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 803 transitions. [2020-08-19 03:23:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:23:18,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:18,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:18,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:23:18,468 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:18,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1370895219, now seen corresponding path program 1 times [2020-08-19 03:23:18,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:18,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163232] [2020-08-19 03:23:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,765 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:18,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:23:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:23:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:23:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 03:23:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 03:23:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,863 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 03:23:18,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163232] [2020-08-19 03:23:18,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:18,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:23:18,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040162038] [2020-08-19 03:23:18,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:23:18,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:18,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:23:18,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:23:18,866 INFO L87 Difference]: Start difference. First operand 685 states and 803 transitions. Second operand 8 states. [2020-08-19 03:23:19,322 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:21,882 INFO L93 Difference]: Finished difference Result 1357 states and 1763 transitions. [2020-08-19 03:23:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 03:23:21,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 03:23:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:21,896 INFO L225 Difference]: With dead ends: 1357 [2020-08-19 03:23:21,896 INFO L226 Difference]: Without dead ends: 1354 [2020-08-19 03:23:21,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 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 03:23:21,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-19 03:23:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1127. [2020-08-19 03:23:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-19 03:23:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1336 transitions. [2020-08-19 03:23:22,118 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1336 transitions. Word has length 93 [2020-08-19 03:23:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:22,118 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1336 transitions. [2020-08-19 03:23:22,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:23:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1336 transitions. [2020-08-19 03:23:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 03:23:22,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:22,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:22,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:23:22,123 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash -669184687, now seen corresponding path program 1 times [2020-08-19 03:23:22,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:22,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824334119] [2020-08-19 03:23:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,436 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:23:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:23:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:23:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:23:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:23:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 03:23:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 03:23:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:23:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 03:23:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 03:23:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-19 03:23:22,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824334119] [2020-08-19 03:23:22,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:23:22,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 03:23:22,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686929970] [2020-08-19 03:23:22,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 03:23:22,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:22,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 03:23:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:23:22,745 INFO L87 Difference]: Start difference. First operand 1127 states and 1336 transitions. Second operand 19 states. [2020-08-19 03:23:23,843 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:24,185 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 03:23:24,455 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:24,705 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:25,481 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:26,624 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:26,983 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:28,358 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:28,608 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:28,876 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:29,128 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:29,369 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:29,610 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:29,885 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:30,144 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:31,042 INFO L93 Difference]: Finished difference Result 2141 states and 2612 transitions. [2020-08-19 03:23:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 03:23:31,043 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-19 03:23:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:31,050 INFO L225 Difference]: With dead ends: 2141 [2020-08-19 03:23:31,051 INFO L226 Difference]: Without dead ends: 1042 [2020-08-19 03:23:31,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 03:23:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-19 03:23:31,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 906. [2020-08-19 03:23:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-08-19 03:23:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1027 transitions. [2020-08-19 03:23:31,293 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1027 transitions. Word has length 152 [2020-08-19 03:23:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:31,296 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1027 transitions. [2020-08-19 03:23:31,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 03:23:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1027 transitions. [2020-08-19 03:23:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 03:23:31,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:31,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:31,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:23:31,303 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:31,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:31,304 INFO L82 PathProgramCache]: Analyzing trace with hash 906656976, now seen corresponding path program 1 times [2020-08-19 03:23:31,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:31,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953755538] [2020-08-19 03:23:31,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,636 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:31,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:23:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:23:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:23:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:23:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:23:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 03:23:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 03:23:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 03:23:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 03:23:31,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953755538] [2020-08-19 03:23:31,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:23:31,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 03:23:31,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745804833] [2020-08-19 03:23:31,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:23:31,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:31,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:23:31,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:23:31,861 INFO L87 Difference]: Start difference. First operand 906 states and 1027 transitions. Second operand 13 states. [2020-08-19 03:23:33,136 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:33,398 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:33,633 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:34,607 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:35,893 INFO L93 Difference]: Finished difference Result 1616 states and 1930 transitions. [2020-08-19 03:23:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 03:23:35,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 03:23:35,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:35,895 INFO L225 Difference]: With dead ends: 1616 [2020-08-19 03:23:35,895 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:23:35,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 03:23:35,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:23:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:23:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:23:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:23:35,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-19 03:23:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:35,903 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:23:35,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:23:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:23:35,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:23:35,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:23:35,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:23:36,378 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 26 [2020-08-19 03:23:36,506 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2020-08-19 03:23:36,648 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-19 03:23:36,838 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 26 [2020-08-19 03:23:37,020 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-19 03:23:37,215 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-19 03:23:37,344 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-19 03:23:37,478 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 25 [2020-08-19 03:23:39,411 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293