/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:57:37,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:57:37,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:57:37,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:57:37,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:57:37,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:57:37,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:57:37,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:57:37,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:57:37,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:57:37,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:57:37,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:57:37,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:57:37,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:57:38,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:57:38,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:57:38,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:57:38,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:57:38,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:57:38,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:57:38,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:57:38,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:57:38,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:57:38,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:57:38,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:57:38,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:57:38,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:57:38,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:57:38,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:57:38,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:57:38,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:57:38,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:57:38,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:57:38,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:57:38,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:57:38,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:57:38,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:57:38,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:57:38,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:57:38,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:57:38,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:57:38,041 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 [2020-08-18 11:57:38,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:57:38,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:57:38,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:57:38,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:57:38,065 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:57:38,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:57:38,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:57:38,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:57:38,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:57:38,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:57:38,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:57:38,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:57:38,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:57:38,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:57:38,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:57:38,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:57:38,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:57:38,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:57:38,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:57:38,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:57:38,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:57:38,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:57:38,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:57:38,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:57:38,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:57:38,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:57:38,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:57:38,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:57:38,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:57:38,070 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:57:38,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:57:38,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:57:38,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:57:38,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:57:38,364 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:57:38,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-18 11:57:38,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44ed7b55/9a80431c9f094fffae559d6fb9deadb4/FLAG1baf2ef83 [2020-08-18 11:57:38,951 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:57:38,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-18 11:57:38,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44ed7b55/9a80431c9f094fffae559d6fb9deadb4/FLAG1baf2ef83 [2020-08-18 11:57:39,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44ed7b55/9a80431c9f094fffae559d6fb9deadb4 [2020-08-18 11:57:39,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:57:39,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:57:39,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:57:39,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:57:39,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:57:39,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:39,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d721f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39, skipping insertion in model container [2020-08-18 11:57:39,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:39,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:57:39,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:57:39,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:57:39,825 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:57:39,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:57:39,994 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:57:39,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39 WrapperNode [2020-08-18 11:57:39,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:57:39,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:57:39,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:57:39,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:57:40,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:40,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:40,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:40,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:40,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:40,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:40,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (1/1) ... [2020-08-18 11:57:40,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:57:40,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:57:40,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:57:40,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:57:40,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (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 [2020-08-18 11:57:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:57:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:57:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:57:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:57:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:57:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:57:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:57:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:57:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:57:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:57:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:57:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:57:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:57:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:57:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:57:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 11:57:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 11:57:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:57:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:57:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:57:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:57:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:57:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:57:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:57:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 11:57:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:57:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:57:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:57:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:57:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:57:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:57:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:57:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:57:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 11:57:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:57:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 11:57:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:57:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:57:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:57:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:57:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:57:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:57:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 11:57:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:57:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:57:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:57:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:57:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:57:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:57:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:57:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:57:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:57:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:57:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:57:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:57:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:57:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:57:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:57:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:57:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:57:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:57:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:57:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:57:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:57:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:57:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:57:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:57:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:57:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:57:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:57:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:57:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 11:57:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:57:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:57:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:57:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:57:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:57:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:57:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:57:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:57:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:57:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 11:57:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:57:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:57:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:57:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:57:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 11:57:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:57:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:57:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:57:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:57:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:57:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:57:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:57:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:57:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 11:57:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 11:57:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:57:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 11:57:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:57:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:57:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:57:41,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:57:41,367 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:57:41,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:57:41 BoogieIcfgContainer [2020-08-18 11:57:41,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:57:41,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:57:41,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:57:41,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:57:41,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:57:39" (1/3) ... [2020-08-18 11:57:41,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775a554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:57:41, skipping insertion in model container [2020-08-18 11:57:41,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:39" (2/3) ... [2020-08-18 11:57:41,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775a554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:57:41, skipping insertion in model container [2020-08-18 11:57:41,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:57:41" (3/3) ... [2020-08-18 11:57:41,389 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2020-08-18 11:57:41,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:57:41,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:57:41,423 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:57:41,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:57:41,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:57:41,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:57:41,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:57:41,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:57:41,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:57:41,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:57:41,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:57:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-18 11:57:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 11:57:41,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:41,479 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] [2020-08-18 11:57:41,480 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:41,486 INFO L82 PathProgramCache]: Analyzing trace with hash -519940638, now seen corresponding path program 1 times [2020-08-18 11:57:41,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:41,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37757669] [2020-08-18 11:57:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,144 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:57:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:57:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:42,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37757669] [2020-08-18 11:57:42,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:42,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:57:42,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016870119] [2020-08-18 11:57:42,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:57:42,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:42,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:57:42,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:57:42,314 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-18 11:57:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:43,639 INFO L93 Difference]: Finished difference Result 354 states and 460 transitions. [2020-08-18 11:57:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:57:43,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 11:57:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:43,657 INFO L225 Difference]: With dead ends: 354 [2020-08-18 11:57:43,657 INFO L226 Difference]: Without dead ends: 196 [2020-08-18 11:57:43,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:57:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-18 11:57:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2020-08-18 11:57:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-18 11:57:43,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-18 11:57:43,777 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 51 [2020-08-18 11:57:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:43,778 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-18 11:57:43,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:57:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-18 11:57:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:57:43,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:43,782 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] [2020-08-18 11:57:43,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:57:43,783 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:43,783 INFO L82 PathProgramCache]: Analyzing trace with hash -183354494, now seen corresponding path program 1 times [2020-08-18 11:57:43,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:43,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5917165] [2020-08-18 11:57:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,084 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:57:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:44,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5917165] [2020-08-18 11:57:44,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:44,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:57:44,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167091433] [2020-08-18 11:57:44,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:57:44,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:44,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:57:44,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:57:44,141 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 5 states. [2020-08-18 11:57:44,602 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:45,736 INFO L93 Difference]: Finished difference Result 295 states and 367 transitions. [2020-08-18 11:57:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 11:57:45,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 11:57:45,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:45,740 INFO L225 Difference]: With dead ends: 295 [2020-08-18 11:57:45,741 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 11:57:45,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:57:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 11:57:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-18 11:57:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 11:57:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-18 11:57:45,794 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 52 [2020-08-18 11:57:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:45,794 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-18 11:57:45,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:57:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-18 11:57:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 11:57:45,797 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:45,797 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] [2020-08-18 11:57:45,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:57:45,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:45,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1707012514, now seen corresponding path program 1 times [2020-08-18 11:57:45,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:45,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294490460] [2020-08-18 11:57:45,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,116 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:57:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 11:57:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:46,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294490460] [2020-08-18 11:57:46,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:46,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:57:46,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719561326] [2020-08-18 11:57:46,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:57:46,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:46,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:57:46,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:57:46,233 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 9 states. [2020-08-18 11:57:46,663 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:46,974 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:47,224 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:47,465 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:49,043 INFO L93 Difference]: Finished difference Result 308 states and 386 transitions. [2020-08-18 11:57:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 11:57:49,044 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 11:57:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:49,048 INFO L225 Difference]: With dead ends: 308 [2020-08-18 11:57:49,048 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 11:57:49,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:57:49,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 11:57:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-18 11:57:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 11:57:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2020-08-18 11:57:49,107 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 57 [2020-08-18 11:57:49,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:49,109 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2020-08-18 11:57:49,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:57:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2020-08-18 11:57:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 11:57:49,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:49,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:49,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:57:49,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:49,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1819519357, now seen corresponding path program 1 times [2020-08-18 11:57:49,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:49,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064941687] [2020-08-18 11:57:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,487 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:57:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 11:57:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 11:57:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:49,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064941687] [2020-08-18 11:57:49,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:49,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:57:49,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968346451] [2020-08-18 11:57:49,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:57:49,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:49,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:57:49,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:57:49,623 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 7 states. [2020-08-18 11:57:49,940 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:51,253 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:52,297 INFO L93 Difference]: Finished difference Result 418 states and 526 transitions. [2020-08-18 11:57:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:57:52,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-18 11:57:52,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:52,302 INFO L225 Difference]: With dead ends: 418 [2020-08-18 11:57:52,302 INFO L226 Difference]: Without dead ends: 296 [2020-08-18 11:57:52,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 11:57:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-18 11:57:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 247. [2020-08-18 11:57:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-18 11:57:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 282 transitions. [2020-08-18 11:57:52,353 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 282 transitions. Word has length 75 [2020-08-18 11:57:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:52,354 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 282 transitions. [2020-08-18 11:57:52,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:57:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 282 transitions. [2020-08-18 11:57:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 11:57:52,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:52,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:52,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:57:52,356 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:52,356 INFO L82 PathProgramCache]: Analyzing trace with hash 948942276, now seen corresponding path program 1 times [2020-08-18 11:57:52,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:52,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481726360] [2020-08-18 11:57:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,652 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:57:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 11:57:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 11:57:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:52,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481726360] [2020-08-18 11:57:52,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:52,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:57:52,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615593916] [2020-08-18 11:57:52,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:57:52,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:52,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:57:52,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:57:52,779 INFO L87 Difference]: Start difference. First operand 247 states and 282 transitions. Second operand 9 states. [2020-08-18 11:57:53,323 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:54,368 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:54,713 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:55,353 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:55,596 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:57,098 INFO L93 Difference]: Finished difference Result 737 states and 912 transitions. [2020-08-18 11:57:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 11:57:57,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-18 11:57:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:57,104 INFO L225 Difference]: With dead ends: 737 [2020-08-18 11:57:57,105 INFO L226 Difference]: Without dead ends: 518 [2020-08-18 11:57:57,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 11:57:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-18 11:57:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 442. [2020-08-18 11:57:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 11:57:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 504 transitions. [2020-08-18 11:57:57,209 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 504 transitions. Word has length 89 [2020-08-18 11:57:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:57,210 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 504 transitions. [2020-08-18 11:57:57,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:57:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 504 transitions. [2020-08-18 11:57:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 11:57:57,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:57,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:57,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:57:57,213 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:57,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1944159016, now seen corresponding path program 1 times [2020-08-18 11:57:57,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:57,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11571301] [2020-08-18 11:57:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,498 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:57,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 11:57:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 11:57:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:57,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11571301] [2020-08-18 11:57:57,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:57,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:57:57,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780066891] [2020-08-18 11:57:57,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:57:57,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:57,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:57:57,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:57:57,664 INFO L87 Difference]: Start difference. First operand 442 states and 504 transitions. Second operand 10 states. [2020-08-18 11:57:58,051 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:59,398 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:58:00,656 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:00,914 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:01,183 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:01,639 INFO L93 Difference]: Finished difference Result 970 states and 1183 transitions. [2020-08-18 11:58:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 11:58:01,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 11:58:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:01,647 INFO L225 Difference]: With dead ends: 970 [2020-08-18 11:58:01,648 INFO L226 Difference]: Without dead ends: 556 [2020-08-18 11:58:01,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 11:58:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-08-18 11:58:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 441. [2020-08-18 11:58:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-08-18 11:58:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 501 transitions. [2020-08-18 11:58:01,736 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 501 transitions. Word has length 93 [2020-08-18 11:58:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:01,737 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 501 transitions. [2020-08-18 11:58:01,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:58:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 501 transitions. [2020-08-18 11:58:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 11:58:01,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:01,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:01,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:58:01,740 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:01,740 INFO L82 PathProgramCache]: Analyzing trace with hash -412136482, now seen corresponding path program 1 times [2020-08-18 11:58:01,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:01,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964832280] [2020-08-18 11:58:01,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,044 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:02,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:58:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:58:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:58:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:58:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:58:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 11:58:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:58:02,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964832280] [2020-08-18 11:58:02,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:02,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:58:02,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100496099] [2020-08-18 11:58:02,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:58:02,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:02,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:58:02,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:58:02,246 INFO L87 Difference]: Start difference. First operand 441 states and 501 transitions. Second operand 10 states. [2020-08-18 11:58:03,272 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:03,541 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 11:58:03,789 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:58:04,033 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:58:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:05,399 INFO L93 Difference]: Finished difference Result 977 states and 1216 transitions. [2020-08-18 11:58:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:58:05,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-08-18 11:58:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:05,407 INFO L225 Difference]: With dead ends: 977 [2020-08-18 11:58:05,407 INFO L226 Difference]: Without dead ends: 564 [2020-08-18 11:58:05,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:58:05,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-18 11:58:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 451. [2020-08-18 11:58:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-18 11:58:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 511 transitions. [2020-08-18 11:58:05,485 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 511 transitions. Word has length 109 [2020-08-18 11:58:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:05,485 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 511 transitions. [2020-08-18 11:58:05,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:58:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 511 transitions. [2020-08-18 11:58:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 11:58:05,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:05,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:05,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:58:05,488 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1527025564, now seen corresponding path program 1 times [2020-08-18 11:58:05,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:05,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211097524] [2020-08-18 11:58:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,747 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:58:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:58:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:58:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:58:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:58:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 11:58:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:58:05,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211097524] [2020-08-18 11:58:05,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:05,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:58:05,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500342964] [2020-08-18 11:58:05,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:58:05,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:05,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:58:05,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:58:05,940 INFO L87 Difference]: Start difference. First operand 451 states and 511 transitions. Second operand 12 states. [2020-08-18 11:58:06,620 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:58:06,862 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:58:07,103 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:58:07,832 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:58:08,074 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:58:08,325 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:58:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:09,906 INFO L93 Difference]: Finished difference Result 997 states and 1238 transitions. [2020-08-18 11:58:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:58:09,908 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 11:58:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:09,911 INFO L225 Difference]: With dead ends: 997 [2020-08-18 11:58:09,911 INFO L226 Difference]: Without dead ends: 574 [2020-08-18 11:58:09,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 11:58:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-08-18 11:58:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 459. [2020-08-18 11:58:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-18 11:58:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2020-08-18 11:58:10,006 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 109 [2020-08-18 11:58:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:10,007 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2020-08-18 11:58:10,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:58:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2020-08-18 11:58:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 11:58:10,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:10,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:10,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:58:10,009 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:10,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1998771717, now seen corresponding path program 1 times [2020-08-18 11:58:10,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:10,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926377929] [2020-08-18 11:58:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,305 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:58:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:58:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:58:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:58:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:58:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 11:58:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:58:10,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926377929] [2020-08-18 11:58:10,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:10,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:10,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538061568] [2020-08-18 11:58:10,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:10,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:10,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:10,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:10,586 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand 8 states. [2020-08-18 11:58:11,084 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:58:11,625 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:58:14,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:14,363 INFO L93 Difference]: Finished difference Result 1365 states and 1751 transitions. [2020-08-18 11:58:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 11:58:14,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-08-18 11:58:14,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:14,370 INFO L225 Difference]: With dead ends: 1365 [2020-08-18 11:58:14,371 INFO L226 Difference]: Without dead ends: 934 [2020-08-18 11:58:14,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 11:58:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-08-18 11:58:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 789. [2020-08-18 11:58:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-18 11:58:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 921 transitions. [2020-08-18 11:58:14,492 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 921 transitions. Word has length 109 [2020-08-18 11:58:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:14,493 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 921 transitions. [2020-08-18 11:58:14,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:58:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 921 transitions. [2020-08-18 11:58:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 11:58:14,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:14,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:14,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:58:14,496 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:14,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1262789055, now seen corresponding path program 1 times [2020-08-18 11:58:14,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:14,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115954498] [2020-08-18 11:58:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,765 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:58:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:58:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:58:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 11:58:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:14,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:58:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:15,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:15,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:15,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 11:58:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 11:58:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 11:58:15,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115954498] [2020-08-18 11:58:15,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:58:15,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 11:58:15,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295779140] [2020-08-18 11:58:15,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 11:58:15,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:15,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 11:58:15,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:58:15,187 INFO L87 Difference]: Start difference. First operand 789 states and 921 transitions. Second operand 18 states. [2020-08-18 11:58:15,780 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:58:16,131 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:16,399 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:16,656 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:17,402 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:58:18,591 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:18,946 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:19,234 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:19,524 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:19,880 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:20,163 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:20,717 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 11:58:21,295 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 11:58:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:24,305 INFO L93 Difference]: Finished difference Result 1665 states and 2044 transitions. [2020-08-18 11:58:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 11:58:24,306 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-08-18 11:58:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:24,312 INFO L225 Difference]: With dead ends: 1665 [2020-08-18 11:58:24,313 INFO L226 Difference]: Without dead ends: 904 [2020-08-18 11:58:24,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 11:58:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-08-18 11:58:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 768. [2020-08-18 11:58:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-08-18 11:58:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 886 transitions. [2020-08-18 11:58:24,450 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 886 transitions. Word has length 113 [2020-08-18 11:58:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:24,450 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 886 transitions. [2020-08-18 11:58:24,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 11:58:24,451 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 886 transitions. [2020-08-18 11:58:24,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-18 11:58:24,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:24,454 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:24,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:58:24,454 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:24,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1271659967, now seen corresponding path program 1 times [2020-08-18 11:58:24,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:24,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128925272] [2020-08-18 11:58:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,718 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:24,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:58:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:58:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:58:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:58:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:58:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 11:58:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 11:58:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 11:58:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 11:58:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 11:58:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-18 11:58:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:25,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-18 11:58:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 11:58:25,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128925272] [2020-08-18 11:58:25,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:58:25,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 11:58:25,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961427708] [2020-08-18 11:58:25,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 11:58:25,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:25,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 11:58:25,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:58:25,058 INFO L87 Difference]: Start difference. First operand 768 states and 886 transitions. Second operand 19 states. [2020-08-18 11:58:25,736 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:58:26,085 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:26,368 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:26,614 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:27,340 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:58:28,480 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:28,818 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:29,117 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:29,396 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:29,737 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:30,020 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:31,323 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:31,581 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:31,888 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:32,149 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:33,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:33,477 INFO L93 Difference]: Finished difference Result 1426 states and 1761 transitions. [2020-08-18 11:58:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 11:58:33,478 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 183 [2020-08-18 11:58:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:33,479 INFO L225 Difference]: With dead ends: 1426 [2020-08-18 11:58:33,479 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 11:58:33,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-18 11:58:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 11:58:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 11:58:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 11:58:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 11:58:33,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2020-08-18 11:58:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:33,489 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 11:58:33,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 11:58:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 11:58:33,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 11:58:33,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:58:33,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 11:58:34,807 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-18 11:58:35,685 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-18 11:58:36,897 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-18 11:58:37,753 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-18 11:58:37,883 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2020-08-18 11:58:38,727 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 254