/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=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:01:50,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:01:50,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:01:50,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:01:50,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:01:50,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:01:50,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:01:50,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:01:50,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:01:50,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:01:50,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:01:50,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:01:50,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:01:50,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:01:50,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:01:50,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:01:50,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:01:50,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:01:50,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:01:50,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:01:50,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:01:50,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:01:50,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:01:50,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:01:50,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:01:50,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:01:50,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:01:50,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:01:50,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:01:50,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:01:50,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:01:50,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:01:50,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:01:50,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:01:50,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:01:50,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:01:50,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:01:50,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:01:50,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:01:50,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:01:50,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:01:50,766 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 05:01:50,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:01:50,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:01:50,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:01:50,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:01:50,790 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:01:50,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:01:50,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:01:50,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:01:50,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:01:50,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:01:50,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:01:50,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:01:50,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:01:50,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:01:50,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:01:50,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:01:50,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:01:50,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:01:50,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:01:50,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:01:50,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:01:50,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:01:50,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:01:50,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:01:50,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:01:50,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:01:50,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:01:50,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:01:50,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:01:50,795 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=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:01:51,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:01:51,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:01:51,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:01:51,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:01:51,131 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:01:51,132 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-19 05:01:51,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6be66a41d/ef78d3fba4ca4b7fbfe3e88791c6e904/FLAG0b3bac064 [2020-08-19 05:01:51,739 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:01:51,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-19 05:01:51,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6be66a41d/ef78d3fba4ca4b7fbfe3e88791c6e904/FLAG0b3bac064 [2020-08-19 05:01:52,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6be66a41d/ef78d3fba4ca4b7fbfe3e88791c6e904 [2020-08-19 05:01:52,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:01:52,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:01:52,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:01:52,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:01:52,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:01:52,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2f3aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52, skipping insertion in model container [2020-08-19 05:01:52,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:01:52,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:01:52,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:01:52,623 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:01:52,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:01:52,743 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:01:52,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52 WrapperNode [2020-08-19 05:01:52,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:01:52,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:01:52,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:01:52,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:01:52,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (1/1) ... [2020-08-19 05:01:52,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:01:52,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:01:52,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:01:52,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:01:52,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (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 05:01:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:01:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:01:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:01:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:01:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:01:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:01:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:01:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:01:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:01:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:01:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 05:01:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:01:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:01:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:01:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:01:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:01:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:01:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:01:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:01:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:01:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:01:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:01:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:01:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:01:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:01:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:01:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:01:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:01:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:01:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:01:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:01:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:01:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:01:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:01:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:01:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:01:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:01:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:01:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:01:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:01:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:01:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:01:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:01:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:01:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:01:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:01:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:01:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:01:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:01:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:01:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:01:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:01:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:01:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:01:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:01:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:01:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:01:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:01:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 05:01:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:01:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:01:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:01:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:01:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:01:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:01:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:01:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:01:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:01:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:01:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:01:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:01:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:01:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:01:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:01:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:01:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:01:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:01:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:01:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:01:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:01:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:01:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:01:54,017 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:01:54,018 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:01:54,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:01:54 BoogieIcfgContainer [2020-08-19 05:01:54,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:01:54,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:01:54,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:01:54,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:01:54,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:01:52" (1/3) ... [2020-08-19 05:01:54,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dea1b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:01:54, skipping insertion in model container [2020-08-19 05:01:54,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:52" (2/3) ... [2020-08-19 05:01:54,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dea1b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:01:54, skipping insertion in model container [2020-08-19 05:01:54,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:01:54" (3/3) ... [2020-08-19 05:01:54,031 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-19 05:01:54,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:01:54,050 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:01:54,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:01:54,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:01:54,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:01:54,089 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:01:54,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:01:54,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:01:54,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:01:54,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:01:54,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:01:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-19 05:01:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:01:54,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:54,126 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 05:01:54,126 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:54,132 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-19 05:01:54,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:54,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802925322] [2020-08-19 05:01:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,842 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:01:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:01:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:01:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:54,975 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 05:01:54,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802925322] [2020-08-19 05:01:54,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:54,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:01:54,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888197819] [2020-08-19 05:01:54,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:01:54,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:55,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:01:55,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:01:55,005 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-19 05:01:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:01:56,137 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-19 05:01:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:01:56,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 05:01:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:01:56,155 INFO L225 Difference]: With dead ends: 287 [2020-08-19 05:01:56,156 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 05:01:56,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:01:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 05:01:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 05:01:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 05:01:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-19 05:01:56,257 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-19 05:01:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:01:56,257 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-19 05:01:56,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:01:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-19 05:01:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:01:56,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:56,262 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] [2020-08-19 05:01:56,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:01:56,262 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-19 05:01:56,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:56,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186187936] [2020-08-19 05:01:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,663 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:01:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:01:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:01:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,706 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 05:01:56,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186187936] [2020-08-19 05:01:56,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:56,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:01:56,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857898572] [2020-08-19 05:01:56,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:01:56,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:56,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:01:56,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:01:56,710 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-19 05:01:57,143 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:01:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:01:57,942 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-19 05:01:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:01:57,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 05:01:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:01:57,951 INFO L225 Difference]: With dead ends: 220 [2020-08-19 05:01:57,951 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 05:01:57,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:01:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 05:01:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-19 05:01:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 05:01:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-19 05:01:57,985 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-19 05:01:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:01:57,986 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-19 05:01:57,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:01:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-19 05:01:57,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 05:01:57,988 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:57,989 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 05:01:57,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:01:57,989 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:57,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-19 05:01:57,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:57,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890810388] [2020-08-19 05:01:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,308 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:01:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:01:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:01:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,420 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 05:01:58,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890810388] [2020-08-19 05:01:58,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:58,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:01:58,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462596519] [2020-08-19 05:01:58,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:01:58,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:58,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:01:58,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:01:58,423 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-19 05:01:58,816 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:01:59,146 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:01:59,429 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:01:59,668 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:00,749 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-19 05:02:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:02:00,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 05:02:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:00,757 INFO L225 Difference]: With dead ends: 229 [2020-08-19 05:02:00,758 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 05:02:00,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:00,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 05:02:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-19 05:02:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 05:02:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-19 05:02:00,793 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-19 05:02:00,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:00,793 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-19 05:02:00,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:00,794 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-19 05:02:00,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 05:02:00,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:00,795 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] [2020-08-19 05:02:00,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:02:00,796 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:00,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:00,796 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-19 05:02:00,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:00,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548542817] [2020-08-19 05:02:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,049 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:01,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:02:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:02:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:02:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 05:02:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:01,141 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 05:02:01,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548542817] [2020-08-19 05:02:01,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:01,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:02:01,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183813030] [2020-08-19 05:02:01,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:02:01,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:01,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:02:01,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:02:01,144 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-19 05:02:01,470 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:02,565 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:03,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:03,185 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-19 05:02:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:02:03,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 05:02:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:03,193 INFO L225 Difference]: With dead ends: 324 [2020-08-19 05:02:03,194 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 05:02:03,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:02:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 05:02:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-19 05:02:03,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-19 05:02:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-19 05:02:03,260 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-19 05:02:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:03,260 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-19 05:02:03,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:02:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-19 05:02:03,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 05:02:03,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:03,263 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] [2020-08-19 05:02:03,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:02:03,263 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-19 05:02:03,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:03,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004062099] [2020-08-19 05:02:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,553 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:03,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:02:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 05:02:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 05:02:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 05:02:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:03,645 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 05:02:03,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004062099] [2020-08-19 05:02:03,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:03,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:02:03,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262010732] [2020-08-19 05:02:03,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:02:03,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:03,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:02:03,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:02:03,648 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-19 05:02:04,101 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:05,419 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:05,723 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:05,964 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:06,183 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:06,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:06,776 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-19 05:02:06,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:02:06,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-19 05:02:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:06,781 INFO L225 Difference]: With dead ends: 528 [2020-08-19 05:02:06,781 INFO L226 Difference]: Without dead ends: 359 [2020-08-19 05:02:06,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:02:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-19 05:02:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-19 05:02:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-19 05:02:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-19 05:02:06,858 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-19 05:02:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:06,859 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-19 05:02:06,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-19 05:02:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:02:06,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:06,861 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] [2020-08-19 05:02:06,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:02:06,861 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:06,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:06,862 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-19 05:02:06,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:06,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361779736] [2020-08-19 05:02:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,167 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:07,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:02:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 05:02:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:02:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:02:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:07,285 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 05:02:07,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361779736] [2020-08-19 05:02:07,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:07,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:02:07,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049657924] [2020-08-19 05:02:07,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:02:07,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:07,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:02:07,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:02:07,288 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-19 05:02:07,709 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:08,204 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:09,718 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:11,136 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-19 05:02:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:02:11,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 05:02:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:11,142 INFO L225 Difference]: With dead ends: 770 [2020-08-19 05:02:11,142 INFO L226 Difference]: Without dead ends: 590 [2020-08-19 05:02:11,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 05:02:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-19 05:02:11,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-19 05:02:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-19 05:02:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-19 05:02:11,250 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-19 05:02:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:11,250 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-19 05:02:11,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:02:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-19 05:02:11,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:02:11,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:11,252 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] [2020-08-19 05:02:11,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:02:11,253 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:11,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:11,253 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-19 05:02:11,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:11,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383232454] [2020-08-19 05:02:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,539 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:11,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:02:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 05:02:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:02:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:02:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:11,671 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 05:02:11,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383232454] [2020-08-19 05:02:11,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:11,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:02:11,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777301408] [2020-08-19 05:02:11,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:02:11,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:11,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:02:11,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:02:11,674 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-19 05:02:12,539 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:12,764 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:13,015 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:13,952 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-19 05:02:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:02:13,954 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-19 05:02:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:13,959 INFO L225 Difference]: With dead ends: 947 [2020-08-19 05:02:13,959 INFO L226 Difference]: Without dead ends: 566 [2020-08-19 05:02:13,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-19 05:02:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-19 05:02:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-19 05:02:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-19 05:02:14,057 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-19 05:02:14,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:14,058 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-19 05:02:14,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-19 05:02:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:02:14,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:14,060 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] [2020-08-19 05:02:14,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:02:14,060 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:14,060 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-19 05:02:14,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:14,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624672432] [2020-08-19 05:02:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,325 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:14,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:02:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 05:02:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:02:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:02:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:14,477 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 05:02:14,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624672432] [2020-08-19 05:02:14,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:14,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:02:14,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053189136] [2020-08-19 05:02:14,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:02:14,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:02:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:14,480 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-19 05:02:15,036 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:15,269 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:15,491 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:16,133 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:16,385 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:16,657 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:16,876 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:17,939 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-19 05:02:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:02:17,940 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-19 05:02:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:17,943 INFO L225 Difference]: With dead ends: 1071 [2020-08-19 05:02:17,944 INFO L226 Difference]: Without dead ends: 571 [2020-08-19 05:02:17,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 05:02:17,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-19 05:02:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-19 05:02:18,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-19 05:02:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-19 05:02:18,038 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-19 05:02:18,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:18,038 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-19 05:02:18,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:02:18,039 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-19 05:02:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 05:02:18,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:18,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:18,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:02:18,041 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:18,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-19 05:02:18,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:18,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248349127] [2020-08-19 05:02:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,298 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:02:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:02:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:02:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 05:02:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:02:18,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248349127] [2020-08-19 05:02:18,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:02:18,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:02:18,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419447706] [2020-08-19 05:02:18,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:02:18,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:18,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:02:18,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:18,529 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-19 05:02:19,060 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:19,728 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:20,507 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:20,818 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:21,091 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:21,332 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:21,607 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:21,878 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:22,353 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-19 05:02:22,601 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:22,878 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:23,150 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 05:02:25,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:25,167 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-19 05:02:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 05:02:25,168 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-19 05:02:25,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:25,175 INFO L225 Difference]: With dead ends: 1563 [2020-08-19 05:02:25,175 INFO L226 Difference]: Without dead ends: 1056 [2020-08-19 05:02:25,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-19 05:02:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-19 05:02:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-19 05:02:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-19 05:02:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-19 05:02:25,354 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-19 05:02:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:25,354 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-19 05:02:25,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:02:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-19 05:02:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 05:02:25,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:25,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:25,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:02:25,358 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-19 05:02:25,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:25,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818484728] [2020-08-19 05:02:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,620 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:02:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:02:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 05:02:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 05:02:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 05:02:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:02:25,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818484728] [2020-08-19 05:02:25,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:25,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 05:02:25,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768155692] [2020-08-19 05:02:25,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:02:25,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:25,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:02:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:02:25,826 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-19 05:02:26,577 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:26,826 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:27,066 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:27,617 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:28,304 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:28,660 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:29,259 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:29,530 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:29,793 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:31,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:31,269 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-19 05:02:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 05:02:31,270 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-19 05:02:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:31,276 INFO L225 Difference]: With dead ends: 2050 [2020-08-19 05:02:31,276 INFO L226 Difference]: Without dead ends: 1076 [2020-08-19 05:02:31,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-19 05:02:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-19 05:02:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-19 05:02:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-19 05:02:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-19 05:02:31,420 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-19 05:02:31,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:31,421 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-19 05:02:31,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:02:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-19 05:02:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 05:02:31,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:31,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:31,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:02:31,424 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-19 05:02:31,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:31,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480833416] [2020-08-19 05:02:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,747 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:02:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 05:02:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 05:02:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 05:02:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:02:31,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480833416] [2020-08-19 05:02:31,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:31,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 05:02:31,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815932236] [2020-08-19 05:02:31,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:02:31,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:31,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:02:31,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:02:31,940 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-19 05:02:32,865 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:33,141 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:33,373 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:34,349 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:34,867 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:35,218 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:35,489 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:36,130 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-19 05:02:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:02:36,131 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-19 05:02:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:36,132 INFO L225 Difference]: With dead ends: 1575 [2020-08-19 05:02:36,132 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 05:02:36,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-19 05:02:36,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 05:02:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 05:02:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 05:02:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 05:02:36,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-19 05:02:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:36,138 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 05:02:36,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:02:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 05:02:36,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 05:02:36,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:02:36,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 05:02:37,214 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-19 05:02:38,653 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-19 05:02:39,045 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-19 05:02:40,745 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-19 05:02:41,806 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-19 05:02:43,024 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-19 05:02:43,864 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-19 05:02:44,027 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 05:02:44,204 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 05:02:44,370 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-19 05:02:45,021 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-19 05:02:46,153 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-19 05:02:46,750 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-19 05:02:46,926 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-19 05:02:47,112 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 05:02:47,675 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-19 05:02:48,426 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-19 05:02:48,588 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 05:02:48,780 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:48,935 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 05:02:49,729 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-19 05:02:49,998 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-19 05:02:50,163 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1