/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:22:56,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:22:56,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:22:56,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:22:56,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:22:56,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:22:56,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:22:56,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:22:56,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:22:56,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:22:56,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:22:56,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:22:56,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:22:56,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:22:56,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:22:56,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:22:56,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:22:56,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:22:56,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:22:56,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:22:56,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:22:56,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:22:56,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:22:56,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:22:56,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:22:56,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:22:56,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:22:56,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:22:56,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:22:56,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:22:56,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:22:56,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:22:56,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:22:56,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:22:56,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:22:56,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:22:56,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:22:56,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:22:56,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:22:56,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:22:56,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:22:56,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 03:22:56,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:22:56,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:22:56,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:22:56,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:22:56,926 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:22:56,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:22:56,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:22:56,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:22:56,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:22:56,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:22:56,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:22:56,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:22:56,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:22:56,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:22:56,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:22:56,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:22:56,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:22:56,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:22:56,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:22:56,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:22:56,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:22:56,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:22:56,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:22:56,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:22:56,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:22:56,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:22:56,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:22:56,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:22:56,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:22:56,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:22:57,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:22:57,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:22:57,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:22:57,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:22:57,269 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:22:57,269 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-19 03:22:57,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d77d29e67/c36a0e54ea6b48ceb5debca065396804/FLAG89cef6dcf [2020-08-19 03:22:57,886 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:22:57,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-19 03:22:57,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d77d29e67/c36a0e54ea6b48ceb5debca065396804/FLAG89cef6dcf [2020-08-19 03:22:58,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d77d29e67/c36a0e54ea6b48ceb5debca065396804 [2020-08-19 03:22:58,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:22:58,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:22:58,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:22:58,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:22:58,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:22:58,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:58,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771bda5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58, skipping insertion in model container [2020-08-19 03:22:58,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:58,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:22:58,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:22:58,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:22:58,729 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:22:58,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:22:58,931 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:22:58,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58 WrapperNode [2020-08-19 03:22:58,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:22:58,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:22:58,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:22:58,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:22:58,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:58,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:58,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:58,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:59,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:59,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:59,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (1/1) ... [2020-08-19 03:22:59,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:22:59,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:22:59,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:22:59,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:22:59,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:22:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:22:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:22:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:22:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:22:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:22:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:22:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:22:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:22:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:22:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:22:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:22:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:22:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:22:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:22:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:22:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:22:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:22:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:22:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:22:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:22:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:22:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:22:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:22:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:22:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:22:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:22:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:22:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:22:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:22:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:22:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:22:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:22:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:22:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:22:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:22:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:22:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 03:22:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:22:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:22:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:22:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:22:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:22:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:22:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:22:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:22:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:22:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:22:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:22:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:22:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:22:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:22:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:22:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:22:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:22:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:22:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:22:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:22:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:22:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:22:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:22:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:22:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:22:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:22:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:22:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:22:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:22:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:22:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:22:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:22:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:22:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:22:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:22:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:22:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:22:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:22:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:22:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:22:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:22:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:22:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:22:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:22:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:22:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:22:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:22:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 03:22:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:22:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:22:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:22:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:22:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:22:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:22:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:22:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:22:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:22:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:22:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:23:00,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:23:00,189 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:23:00,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:23:00 BoogieIcfgContainer [2020-08-19 03:23:00,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:23:00,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:23:00,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:23:00,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:23:00,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:22:58" (1/3) ... [2020-08-19 03:23:00,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@819614d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:23:00, skipping insertion in model container [2020-08-19 03:23:00,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:22:58" (2/3) ... [2020-08-19 03:23:00,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@819614d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:23:00, skipping insertion in model container [2020-08-19 03:23:00,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:23:00" (3/3) ... [2020-08-19 03:23:00,204 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-08-19 03:23:00,215 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:23:00,223 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:23:00,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:23:00,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:23:00,263 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:23:00,264 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:23:00,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:23:00,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:23:00,264 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:23:00,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:23:00,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:23:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-19 03:23:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:23:00,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:00,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:00,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:00,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:00,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2020-08-19 03:23:00,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:00,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765632357] [2020-08-19 03:23:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,066 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:01,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:23:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:23:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:01,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765632357] [2020-08-19 03:23:01,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:01,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:23:01,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857834405] [2020-08-19 03:23:01,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:23:01,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:01,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:23:01,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:23:01,188 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-19 03:23:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:02,386 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2020-08-19 03:23:02,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:23:02,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 03:23:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:02,403 INFO L225 Difference]: With dead ends: 312 [2020-08-19 03:23:02,404 INFO L226 Difference]: Without dead ends: 174 [2020-08-19 03:23:02,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:23:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-19 03:23:02,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-19 03:23:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 03:23:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-19 03:23:02,506 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2020-08-19 03:23:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:02,506 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-19 03:23:02,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:23:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-19 03:23:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:23:02,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:02,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:02,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:23:02,514 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:02,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:02,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2020-08-19 03:23:02,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:02,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290395887] [2020-08-19 03:23:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,866 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:02,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:23:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:23:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:02,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290395887] [2020-08-19 03:23:02,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:02,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:23:02,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789962301] [2020-08-19 03:23:02,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:23:02,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:02,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:23:02,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:23:02,932 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2020-08-19 03:23:03,395 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:04,338 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-08-19 03:23:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:23:04,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 03:23:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:04,343 INFO L225 Difference]: With dead ends: 253 [2020-08-19 03:23:04,344 INFO L226 Difference]: Without dead ends: 164 [2020-08-19 03:23:04,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:23:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-19 03:23:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-19 03:23:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-19 03:23:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-19 03:23:04,413 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2020-08-19 03:23:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:04,414 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-19 03:23:04,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:23:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-19 03:23:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:23:04,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:04,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:04,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:23:04,426 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:04,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:04,427 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2020-08-19 03:23:04,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:04,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187824925] [2020-08-19 03:23:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,791 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:23:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:23:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:04,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187824925] [2020-08-19 03:23:04,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:04,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:23:04,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922748994] [2020-08-19 03:23:04,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:23:04,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:23:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:23:04,888 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-08-19 03:23:05,246 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:05,552 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:05,787 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:06,018 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:07,342 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2020-08-19 03:23:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:23:07,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 03:23:07,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:07,345 INFO L225 Difference]: With dead ends: 266 [2020-08-19 03:23:07,346 INFO L226 Difference]: Without dead ends: 164 [2020-08-19 03:23:07,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:23:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-19 03:23:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-19 03:23:07,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-19 03:23:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-19 03:23:07,389 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2020-08-19 03:23:07,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:07,390 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-19 03:23:07,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:23:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-19 03:23:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 03:23:07,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:07,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:07,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:23:07,392 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:07,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:07,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2020-08-19 03:23:07,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:07,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717071250] [2020-08-19 03:23:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,672 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:07,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:23:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 03:23:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 03:23:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:07,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717071250] [2020-08-19 03:23:07,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:07,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:23:07,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099851775] [2020-08-19 03:23:07,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:23:07,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:07,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:23:07,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:23:07,769 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-08-19 03:23:08,049 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:09,302 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:09,984 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2020-08-19 03:23:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:23:09,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-19 03:23:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:09,989 INFO L225 Difference]: With dead ends: 370 [2020-08-19 03:23:09,989 INFO L226 Difference]: Without dead ends: 268 [2020-08-19 03:23:09,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:23:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-19 03:23:10,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2020-08-19 03:23:10,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-08-19 03:23:10,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-08-19 03:23:10,042 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2020-08-19 03:23:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:10,043 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-08-19 03:23:10,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:23:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-08-19 03:23:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 03:23:10,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:10,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:10,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:23:10,045 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:10,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:10,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2020-08-19 03:23:10,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:10,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389731217] [2020-08-19 03:23:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,349 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:23:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 03:23:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:23:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:10,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389731217] [2020-08-19 03:23:10,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:10,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:23:10,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923288040] [2020-08-19 03:23:10,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:23:10,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:10,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:23:10,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:23:10,453 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2020-08-19 03:23:10,848 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:11,897 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:12,239 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:12,883 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:13,140 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:14,230 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2020-08-19 03:23:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 03:23:14,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 03:23:14,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:14,234 INFO L225 Difference]: With dead ends: 653 [2020-08-19 03:23:14,235 INFO L226 Difference]: Without dead ends: 462 [2020-08-19 03:23:14,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 03:23:14,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-19 03:23:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2020-08-19 03:23:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-19 03:23:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2020-08-19 03:23:14,349 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2020-08-19 03:23:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:14,349 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2020-08-19 03:23:14,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:23:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2020-08-19 03:23:14,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:23:14,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:14,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:14,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:23:14,352 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:14,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:14,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2020-08-19 03:23:14,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:14,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391976453] [2020-08-19 03:23:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,625 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 03:23:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:23:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:14,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391976453] [2020-08-19 03:23:14,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:14,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:23:14,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192535488] [2020-08-19 03:23:14,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:23:14,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:14,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:23:14,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:23:14,781 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2020-08-19 03:23:15,100 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:16,314 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:17,422 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:17,665 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:17,951 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:18,370 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2020-08-19 03:23:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:23:18,372 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 03:23:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:18,377 INFO L225 Difference]: With dead ends: 858 [2020-08-19 03:23:18,377 INFO L226 Difference]: Without dead ends: 500 [2020-08-19 03:23:18,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:23:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-19 03:23:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-19 03:23:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-19 03:23:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2020-08-19 03:23:18,456 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2020-08-19 03:23:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:18,457 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2020-08-19 03:23:18,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:23:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2020-08-19 03:23:18,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 03:23:18,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:18,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:18,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:23:18,460 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:18,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2020-08-19 03:23:18,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:18,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157904531] [2020-08-19 03:23:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,801 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:18,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:18,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:19,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:23:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:23:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:19,042 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 03:23:19,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157904531] [2020-08-19 03:23:19,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:19,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:23:19,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600489835] [2020-08-19 03:23:19,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:23:19,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:19,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:23:19,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:23:19,051 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2020-08-19 03:23:20,134 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:20,393 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:23:20,649 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:20,884 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:22,073 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2020-08-19 03:23:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:23:22,078 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-08-19 03:23:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:22,084 INFO L225 Difference]: With dead ends: 865 [2020-08-19 03:23:22,084 INFO L226 Difference]: Without dead ends: 508 [2020-08-19 03:23:22,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:23:22,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-19 03:23:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2020-08-19 03:23:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-19 03:23:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-08-19 03:23:22,179 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2020-08-19 03:23:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:22,180 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-08-19 03:23:22,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:23:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-08-19 03:23:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 03:23:22,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:22,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:22,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:23:22,182 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:22,183 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2020-08-19 03:23:22,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:22,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378374013] [2020-08-19 03:23:22,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,431 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:22,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:23:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:23:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:22,618 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 03:23:22,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378374013] [2020-08-19 03:23:22,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:22,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:23:22,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467000736] [2020-08-19 03:23:22,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:23:22,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:22,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:23:22,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:23:22,622 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2020-08-19 03:23:23,190 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:23,423 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:23,649 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:24,400 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:24,659 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:24,889 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:26,342 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2020-08-19 03:23:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:23:26,343 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-08-19 03:23:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:26,347 INFO L225 Difference]: With dead ends: 885 [2020-08-19 03:23:26,347 INFO L226 Difference]: Without dead ends: 518 [2020-08-19 03:23:26,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:23:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-19 03:23:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2020-08-19 03:23:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-08-19 03:23:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2020-08-19 03:23:26,424 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2020-08-19 03:23:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:26,425 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2020-08-19 03:23:26,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:23:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2020-08-19 03:23:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 03:23:26,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:26,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:26,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:23:26,427 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:26,428 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2020-08-19 03:23:26,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:26,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241672383] [2020-08-19 03:23:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,677 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:26,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:23:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:23:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:26,830 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 03:23:26,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241672383] [2020-08-19 03:23:26,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:26,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:23:26,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220001663] [2020-08-19 03:23:26,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:23:26,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:26,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:23:26,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:23:26,833 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2020-08-19 03:23:27,192 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:27,966 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:30,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:30,699 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2020-08-19 03:23:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:23:30,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-08-19 03:23:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:30,706 INFO L225 Difference]: With dead ends: 1233 [2020-08-19 03:23:30,706 INFO L226 Difference]: Without dead ends: 858 [2020-08-19 03:23:30,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 03:23:30,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-19 03:23:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2020-08-19 03:23:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-08-19 03:23:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2020-08-19 03:23:30,852 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2020-08-19 03:23:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:30,852 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2020-08-19 03:23:30,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:23:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2020-08-19 03:23:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 03:23:30,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:30,855 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:30,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:23:30,855 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:30,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:30,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2020-08-19 03:23:30,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:30,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187307615] [2020-08-19 03:23:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,193 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:23:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:23:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 03:23:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 03:23:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:23:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,629 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 03:23:31,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187307615] [2020-08-19 03:23:31,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:23:31,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 03:23:31,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548039404] [2020-08-19 03:23:31,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 03:23:31,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:31,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 03:23:31,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:23:31,633 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 18 states. [2020-08-19 03:23:32,178 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:32,492 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 03:23:32,748 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:32,990 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:33,692 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:34,741 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:35,052 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:35,338 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:35,634 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:35,982 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:36,260 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:36,823 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-19 03:23:37,391 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-19 03:23:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:39,578 INFO L93 Difference]: Finished difference Result 1515 states and 1873 transitions. [2020-08-19 03:23:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-19 03:23:39,579 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-08-19 03:23:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:39,585 INFO L225 Difference]: With dead ends: 1515 [2020-08-19 03:23:39,585 INFO L226 Difference]: Without dead ends: 830 [2020-08-19 03:23:39,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 03:23:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-19 03:23:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 694. [2020-08-19 03:23:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-08-19 03:23:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 803 transitions. [2020-08-19 03:23:39,747 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 803 transitions. Word has length 108 [2020-08-19 03:23:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:39,747 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 803 transitions. [2020-08-19 03:23:39,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 03:23:39,748 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 803 transitions. [2020-08-19 03:23:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 03:23:39,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:39,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:39,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:23:39,752 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:39,753 INFO L82 PathProgramCache]: Analyzing trace with hash 760447467, now seen corresponding path program 1 times [2020-08-19 03:23:39,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:39,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743913309] [2020-08-19 03:23:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,087 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:23:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:23:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:23:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 03:23:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 03:23:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 03:23:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:23:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 03:23:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 03:23:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-19 03:23:40,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743913309] [2020-08-19 03:23:40,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:23:40,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 03:23:40,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774395628] [2020-08-19 03:23:40,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 03:23:40,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:40,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 03:23:40,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:23:40,467 INFO L87 Difference]: Start difference. First operand 694 states and 803 transitions. Second operand 19 states. [2020-08-19 03:23:41,688 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:42,049 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 03:23:42,322 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:42,574 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:23:43,321 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:44,446 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:44,781 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:45,060 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:45,348 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:45,670 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:45,942 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:47,299 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:47,563 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:47,853 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:48,113 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:49,109 INFO L93 Difference]: Finished difference Result 1298 states and 1607 transitions. [2020-08-19 03:23:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 03:23:49,110 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 160 [2020-08-19 03:23:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:49,111 INFO L225 Difference]: With dead ends: 1298 [2020-08-19 03:23:49,111 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:23:49,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 03:23:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:23:49,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:23:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:23:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:23:49,118 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-19 03:23:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:49,118 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:23:49,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 03:23:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:23:49,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:23:49,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:23:49,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:23:51,948 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-19 03:23:52,148 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-19 03:23:52,297 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-19 03:23:52,670 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-19 03:23:52,796 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-19 03:23:52,965 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203