/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:01:12,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:01:12,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:01:12,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:01:12,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:01:12,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:01:12,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:01:12,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:01:12,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:01:12,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:01:12,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:01:12,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:01:12,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:01:12,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:01:12,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:01:12,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:01:12,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:01:12,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:01:12,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:01:12,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:01:12,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:01:12,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:01:12,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:01:12,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:01:12,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:01:12,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:01:12,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:01:12,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:01:12,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:01:12,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:01:12,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:01:12,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:01:12,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:01:12,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:01:12,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:01:12,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:01:12,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:01:12,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:01:12,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:01:12,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:01:12,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:01:12,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:01:13,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:01:13,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:01:13,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:01:13,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:01:13,024 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:01:13,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:01:13,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:01:13,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:01:13,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:01:13,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:01:13,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:01:13,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:01:13,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:01:13,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:01:13,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:01:13,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:01:13,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:01:13,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:01:13,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:01:13,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:01:13,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:01:13,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:01:13,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:01:13,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:01:13,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:01:13,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:01:13,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:01:13,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:01:13,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:01:13,030 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=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:01:13,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:01:13,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:01:13,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:01:13,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:01:13,367 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:01:13,367 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-19 01:01:13,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9c7e3762/69b47ec1651644ea9770e3282ace4b42/FLAG10d3f8c8b [2020-08-19 01:01:13,988 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:01:13,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-19 01:01:14,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9c7e3762/69b47ec1651644ea9770e3282ace4b42/FLAG10d3f8c8b [2020-08-19 01:01:14,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9c7e3762/69b47ec1651644ea9770e3282ace4b42 [2020-08-19 01:01:14,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:01:14,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:01:14,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:01:14,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:01:14,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:01:14,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:01:14" (1/1) ... [2020-08-19 01:01:14,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156a129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:14, skipping insertion in model container [2020-08-19 01:01:14,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:01:14" (1/1) ... [2020-08-19 01:01:14,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:01:14,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:01:14,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:01:14,884 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:01:15,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:01:15,085 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:01:15,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15 WrapperNode [2020-08-19 01:01:15,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:01:15,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:01:15,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:01:15,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:01:15,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (1/1) ... [2020-08-19 01:01:15,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (1/1) ... [2020-08-19 01:01:15,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (1/1) ... [2020-08-19 01:01:15,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (1/1) ... [2020-08-19 01:01:15,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (1/1) ... [2020-08-19 01:01:15,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (1/1) ... [2020-08-19 01:01:15,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (1/1) ... [2020-08-19 01:01:15,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:01:15,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:01:15,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:01:15,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:01:15,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:01:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:01:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:01:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:01:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:01:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:01:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:01:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:01:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:01:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:01:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:01:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:01:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:01:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:01:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:01:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:01:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:01:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:01:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:01:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:01:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:01:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:01:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:01:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:01:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:01:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:01:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:01:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:01:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:01:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:01:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:01:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:01:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:01:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:01:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:01:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:01:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:01:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:01:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:01:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:01:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:01:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:01:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:01:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:01:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:01:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:01:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:01:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:01:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:01:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:01:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:01:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:01:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:01:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:01:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:01:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:01:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:01:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:01:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:01:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:01:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:01:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:01:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:01:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:01:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:01:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:01:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:01:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:01:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:01:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:01:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:01:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:01:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:01:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:01:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:01:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:01:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:01:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:01:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:01:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:01:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:01:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:01:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:01:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:01:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:01:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:01:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:01:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:01:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:01:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:01:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:01:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:01:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:01:16,324 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:01:16,325 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:01:16,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:01:16 BoogieIcfgContainer [2020-08-19 01:01:16,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:01:16,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:01:16,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:01:16,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:01:16,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:01:14" (1/3) ... [2020-08-19 01:01:16,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5894df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:01:16, skipping insertion in model container [2020-08-19 01:01:16,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:01:15" (2/3) ... [2020-08-19 01:01:16,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5894df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:01:16, skipping insertion in model container [2020-08-19 01:01:16,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:01:16" (3/3) ... [2020-08-19 01:01:16,344 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-08-19 01:01:16,356 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:01:16,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:01:16,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:01:16,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:01:16,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:01:16,415 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:01:16,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:01:16,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:01:16,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:01:16,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:01:16,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:01:16,438 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-19 01:01:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:01:16,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:16,449 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] [2020-08-19 01:01:16,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash 261309835, now seen corresponding path program 1 times [2020-08-19 01:01:16,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:16,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103773393] [2020-08-19 01:01:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,178 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:01:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:01:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:17,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103773393] [2020-08-19 01:01:17,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:17,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:01:17,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280156706] [2020-08-19 01:01:17,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:01:17,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:17,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:01:17,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:01:17,314 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-19 01:01:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:18,569 INFO L93 Difference]: Finished difference Result 309 states and 402 transitions. [2020-08-19 01:01:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:01:18,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:01:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:18,586 INFO L225 Difference]: With dead ends: 309 [2020-08-19 01:01:18,586 INFO L226 Difference]: Without dead ends: 167 [2020-08-19 01:01:18,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:01:18,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-19 01:01:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 133. [2020-08-19 01:01:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 01:01:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-19 01:01:18,698 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 46 [2020-08-19 01:01:18,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:18,699 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-19 01:01:18,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:01:18,700 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-19 01:01:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:01:18,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:18,707 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] [2020-08-19 01:01:18,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:01:18,707 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1021856254, now seen corresponding path program 1 times [2020-08-19 01:01:18,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:18,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982725102] [2020-08-19 01:01:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:19,117 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:19,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:19,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:19,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:19,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:01:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:01:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:19,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982725102] [2020-08-19 01:01:19,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:19,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:01:19,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317643972] [2020-08-19 01:01:19,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:01:19,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:19,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:01:19,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:01:19,173 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 4 states. [2020-08-19 01:01:19,574 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:20,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:20,457 INFO L93 Difference]: Finished difference Result 242 states and 293 transitions. [2020-08-19 01:01:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:01:20,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:01:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:20,463 INFO L225 Difference]: With dead ends: 242 [2020-08-19 01:01:20,463 INFO L226 Difference]: Without dead ends: 151 [2020-08-19 01:01:20,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:01:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-19 01:01:20,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-19 01:01:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 01:01:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-19 01:01:20,528 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 47 [2020-08-19 01:01:20,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:20,529 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-19 01:01:20,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:01:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-19 01:01:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:01:20,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:20,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:20,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:01:20,538 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1136847733, now seen corresponding path program 1 times [2020-08-19 01:01:20,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:20,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141821644] [2020-08-19 01:01:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:20,889 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:20,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:01:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:01:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:20,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141821644] [2020-08-19 01:01:20,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:20,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:01:20,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844643863] [2020-08-19 01:01:20,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:01:20,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:20,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:01:20,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:01:20,966 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 8 states. [2020-08-19 01:01:21,297 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:21,610 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:21,884 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:22,116 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:23,330 INFO L93 Difference]: Finished difference Result 251 states and 307 transitions. [2020-08-19 01:01:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:01:23,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 01:01:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:23,337 INFO L225 Difference]: With dead ends: 251 [2020-08-19 01:01:23,338 INFO L226 Difference]: Without dead ends: 151 [2020-08-19 01:01:23,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:01:23,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-19 01:01:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-19 01:01:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 01:01:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-19 01:01:23,378 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 51 [2020-08-19 01:01:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:23,378 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-19 01:01:23,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:01:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-19 01:01:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 01:01:23,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:23,381 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] [2020-08-19 01:01:23,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:01:23,381 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:23,381 INFO L82 PathProgramCache]: Analyzing trace with hash -629251764, now seen corresponding path program 1 times [2020-08-19 01:01:23,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:23,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866818049] [2020-08-19 01:01:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,685 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:23,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:01:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:01:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:01:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:23,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866818049] [2020-08-19 01:01:23,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:23,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:01:23,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110471002] [2020-08-19 01:01:23,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:01:23,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:23,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:01:23,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:01:23,801 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 6 states. [2020-08-19 01:01:24,136 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:25,379 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:25,989 INFO L93 Difference]: Finished difference Result 351 states and 430 transitions. [2020-08-19 01:01:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:01:25,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-19 01:01:25,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:25,994 INFO L225 Difference]: With dead ends: 351 [2020-08-19 01:01:25,994 INFO L226 Difference]: Without dead ends: 251 [2020-08-19 01:01:25,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:01:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-19 01:01:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2020-08-19 01:01:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-19 01:01:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2020-08-19 01:01:26,038 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 64 [2020-08-19 01:01:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:26,038 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2020-08-19 01:01:26,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:01:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2020-08-19 01:01:26,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:01:26,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:26,039 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] [2020-08-19 01:01:26,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:01:26,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1171048631, now seen corresponding path program 1 times [2020-08-19 01:01:26,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:26,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257143997] [2020-08-19 01:01:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,349 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:01:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 01:01:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:01:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:26,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257143997] [2020-08-19 01:01:26,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:26,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:01:26,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748222353] [2020-08-19 01:01:26,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:01:26,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:26,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:01:26,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:01:26,528 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand 12 states. [2020-08-19 01:01:26,912 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:27,228 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:27,470 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:27,716 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:28,367 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:29,361 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:29,678 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:29,942 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:30,257 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:30,546 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:30,819 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:32,170 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:32,580 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:33,349 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2020-08-19 01:01:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:01:33,350 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-19 01:01:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:33,355 INFO L225 Difference]: With dead ends: 739 [2020-08-19 01:01:33,355 INFO L226 Difference]: Without dead ends: 553 [2020-08-19 01:01:33,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:01:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-08-19 01:01:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 495. [2020-08-19 01:01:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-19 01:01:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 577 transitions. [2020-08-19 01:01:33,459 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 577 transitions. Word has length 78 [2020-08-19 01:01:33,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:33,459 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 577 transitions. [2020-08-19 01:01:33,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:01:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 577 transitions. [2020-08-19 01:01:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 01:01:33,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:33,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:33,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:01:33,464 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:33,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2053602902, now seen corresponding path program 1 times [2020-08-19 01:01:33,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:33,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872854535] [2020-08-19 01:01:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,711 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 01:01:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 01:01:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:01:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 01:01:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 01:01:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 01:01:33,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872854535] [2020-08-19 01:01:33,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:33,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:01:33,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399728901] [2020-08-19 01:01:33,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:01:33,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:33,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:01:33,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:01:33,922 INFO L87 Difference]: Start difference. First operand 495 states and 577 transitions. Second operand 11 states. [2020-08-19 01:01:34,473 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 01:01:35,013 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:36,709 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 01:01:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:38,174 INFO L93 Difference]: Finished difference Result 964 states and 1200 transitions. [2020-08-19 01:01:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 01:01:38,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-19 01:01:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:38,181 INFO L225 Difference]: With dead ends: 964 [2020-08-19 01:01:38,181 INFO L226 Difference]: Without dead ends: 610 [2020-08-19 01:01:38,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-19 01:01:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-19 01:01:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 571. [2020-08-19 01:01:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-19 01:01:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 684 transitions. [2020-08-19 01:01:38,313 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 684 transitions. Word has length 136 [2020-08-19 01:01:38,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:38,314 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 684 transitions. [2020-08-19 01:01:38,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:01:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 684 transitions. [2020-08-19 01:01:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-19 01:01:38,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:38,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:38,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:01:38,318 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:38,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:38,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1503231471, now seen corresponding path program 1 times [2020-08-19 01:01:38,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:38,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223256475] [2020-08-19 01:01:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,590 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:01:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:01:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 01:01:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 01:01:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:01:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 01:01:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 01:01:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 01:01:38,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223256475] [2020-08-19 01:01:38,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:38,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:01:38,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740284086] [2020-08-19 01:01:38,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:01:38,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:38,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:01:38,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:01:38,775 INFO L87 Difference]: Start difference. First operand 571 states and 684 transitions. Second operand 10 states. [2020-08-19 01:01:39,848 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:40,074 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:01:40,307 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:40,555 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:41,697 INFO L93 Difference]: Finished difference Result 1175 states and 1478 transitions. [2020-08-19 01:01:41,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:01:41,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-19 01:01:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:41,704 INFO L225 Difference]: With dead ends: 1175 [2020-08-19 01:01:41,704 INFO L226 Difference]: Without dead ends: 628 [2020-08-19 01:01:41,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:01:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-08-19 01:01:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 586. [2020-08-19 01:01:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-08-19 01:01:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 701 transitions. [2020-08-19 01:01:41,842 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 701 transitions. Word has length 141 [2020-08-19 01:01:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:41,843 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 701 transitions. [2020-08-19 01:01:41,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:01:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 701 transitions. [2020-08-19 01:01:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-19 01:01:41,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:41,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:41,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:01:41,849 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:41,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1474731181, now seen corresponding path program 1 times [2020-08-19 01:01:41,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:41,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134971050] [2020-08-19 01:01:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,153 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:01:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:01:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 01:01:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 01:01:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:01:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 01:01:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 01:01:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 01:01:42,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134971050] [2020-08-19 01:01:42,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:42,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:01:42,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174153297] [2020-08-19 01:01:42,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:01:42,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:42,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:01:42,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:01:42,496 INFO L87 Difference]: Start difference. First operand 586 states and 701 transitions. Second operand 12 states. [2020-08-19 01:01:43,194 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:43,544 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:43,833 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:44,373 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:44,599 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:44,837 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:45,863 INFO L93 Difference]: Finished difference Result 1061 states and 1310 transitions. [2020-08-19 01:01:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:01:45,864 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-19 01:01:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:45,869 INFO L225 Difference]: With dead ends: 1061 [2020-08-19 01:01:45,869 INFO L226 Difference]: Without dead ends: 499 [2020-08-19 01:01:45,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:01:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-08-19 01:01:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2020-08-19 01:01:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-08-19 01:01:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2020-08-19 01:01:45,995 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 141 [2020-08-19 01:01:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:45,995 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2020-08-19 01:01:45,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:01:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2020-08-19 01:01:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-19 01:01:45,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:45,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:45,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:01:45,998 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:45,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:45,999 INFO L82 PathProgramCache]: Analyzing trace with hash -339330766, now seen corresponding path program 1 times [2020-08-19 01:01:45,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:45,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488362722] [2020-08-19 01:01:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,261 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:01:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 01:01:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 01:01:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:01:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 01:01:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 01:01:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 01:01:46,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488362722] [2020-08-19 01:01:46,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:46,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:01:46,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281361187] [2020-08-19 01:01:46,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:01:46,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:46,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:01:46,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:01:46,533 INFO L87 Difference]: Start difference. First operand 475 states and 565 transitions. Second operand 15 states. [2020-08-19 01:01:47,027 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:47,704 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:48,669 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:48,993 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:49,246 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:49,501 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:49,811 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:50,075 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:50,632 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 01:01:51,122 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 01:01:52,024 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:52,264 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:52,548 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:52,784 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:53,542 INFO L93 Difference]: Finished difference Result 1250 states and 1546 transitions. [2020-08-19 01:01:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 01:01:53,544 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-19 01:01:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:53,550 INFO L225 Difference]: With dead ends: 1250 [2020-08-19 01:01:53,551 INFO L226 Difference]: Without dead ends: 799 [2020-08-19 01:01:53,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 01:01:53,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-08-19 01:01:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 760. [2020-08-19 01:01:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-19 01:01:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 889 transitions. [2020-08-19 01:01:53,703 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 889 transitions. Word has length 145 [2020-08-19 01:01:53,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:53,703 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 889 transitions. [2020-08-19 01:01:53,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:01:53,704 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 889 transitions. [2020-08-19 01:01:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 01:01:53,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:53,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:53,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:01:53,707 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:53,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash 929993430, now seen corresponding path program 1 times [2020-08-19 01:01:53,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:53,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951803985] [2020-08-19 01:01:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:53,989 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:53,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:01:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 01:01:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 01:01:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 01:01:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:01:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 01:01:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 01:01:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-19 01:01:54,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951803985] [2020-08-19 01:01:54,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:54,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:01:54,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362947249] [2020-08-19 01:01:54,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:01:54,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:54,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:01:54,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:01:54,138 INFO L87 Difference]: Start difference. First operand 760 states and 889 transitions. Second operand 11 states. [2020-08-19 01:01:54,461 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:56,156 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:56,403 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:56,645 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:56,945 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:57,177 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:57,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:57,582 INFO L93 Difference]: Finished difference Result 888 states and 1101 transitions. [2020-08-19 01:01:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 01:01:57,583 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-19 01:01:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:57,588 INFO L225 Difference]: With dead ends: 888 [2020-08-19 01:01:57,588 INFO L226 Difference]: Without dead ends: 885 [2020-08-19 01:01:57,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-19 01:01:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-19 01:01:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 760. [2020-08-19 01:01:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-19 01:01:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 886 transitions. [2020-08-19 01:01:57,744 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 886 transitions. Word has length 149 [2020-08-19 01:01:57,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:57,744 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 886 transitions. [2020-08-19 01:01:57,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:01:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 886 transitions. [2020-08-19 01:01:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 01:01:57,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:57,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:57,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:01:57,748 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:57,748 INFO L82 PathProgramCache]: Analyzing trace with hash 432107741, now seen corresponding path program 1 times [2020-08-19 01:01:57,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:57,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981778252] [2020-08-19 01:01:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,036 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:01:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 01:01:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 01:01:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:01:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 01:01:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 01:01:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 01:01:58,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981778252] [2020-08-19 01:01:58,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:58,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:01:58,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533309582] [2020-08-19 01:01:58,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:01:58,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:58,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:01:58,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:01:58,281 INFO L87 Difference]: Start difference. First operand 760 states and 886 transitions. Second operand 12 states. [2020-08-19 01:01:58,634 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:59,170 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:59,925 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:00,200 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:00,433 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:00,663 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:02:00,925 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:02:01,174 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:02:02,373 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:02:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:02:03,138 INFO L93 Difference]: Finished difference Result 1786 states and 2220 transitions. [2020-08-19 01:02:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 01:02:03,138 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2020-08-19 01:02:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:02:03,146 INFO L225 Difference]: With dead ends: 1786 [2020-08-19 01:02:03,146 INFO L226 Difference]: Without dead ends: 1168 [2020-08-19 01:02:03,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-19 01:02:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-19 01:02:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1022. [2020-08-19 01:02:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-08-19 01:02:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1207 transitions. [2020-08-19 01:02:03,439 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1207 transitions. Word has length 149 [2020-08-19 01:02:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:02:03,440 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1207 transitions. [2020-08-19 01:02:03,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:02:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1207 transitions. [2020-08-19 01:02:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-19 01:02:03,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:02:03,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 01:02:03,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:02:03,445 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:02:03,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:02:03,445 INFO L82 PathProgramCache]: Analyzing trace with hash -706947900, now seen corresponding path program 2 times [2020-08-19 01:02:03,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:02:03,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241651247] [2020-08-19 01:02:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:02:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:02:03,538 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:02:03,538 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:02:03,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:02:03,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:02:03 BoogieIcfgContainer [2020-08-19 01:02:03,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:02:03,581 INFO L168 Benchmark]: Toolchain (without parser) took 49223.49 ms. Allocated memory was 147.3 MB in the beginning and 744.5 MB in the end (delta: 597.2 MB). Free memory was 100.7 MB in the beginning and 534.1 MB in the end (delta: -433.4 MB). Peak memory consumption was 163.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:02:03,582 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:02:03,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.75 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 100.5 MB in the beginning and 171.0 MB in the end (delta: -70.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:02:03,583 INFO L168 Benchmark]: Boogie Preprocessor took 82.85 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:02:03,584 INFO L168 Benchmark]: RCFGBuilder took 1164.77 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 167.1 MB in the beginning and 196.4 MB in the end (delta: -29.3 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:02:03,585 INFO L168 Benchmark]: TraceAbstraction took 47243.51 ms. Allocated memory was 237.0 MB in the beginning and 744.5 MB in the end (delta: 507.5 MB). Free memory was 195.0 MB in the beginning and 534.1 MB in the end (delta: -339.0 MB). Peak memory consumption was 168.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:02:03,588 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.75 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 100.5 MB in the beginning and 171.0 MB in the end (delta: -70.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.85 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1164.77 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 167.1 MB in the beginning and 196.4 MB in the end (delta: -29.3 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47243.51 ms. Allocated memory was 237.0 MB in the beginning and 744.5 MB in the end (delta: 507.5 MB). Free memory was 195.0 MB in the beginning and 534.1 MB in the end (delta: -339.0 MB). Peak memory consumption was 168.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 317]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L117] int pumpRunning = 0; [L118] int systemActive = 1; [L491] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L715] int cleanupTimeShifts = 4; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L791] int retValue_acc ; [L792] int tmp ; [L796] FCALL select_helpers() [L797] FCALL select_features() [L798] CALL, EXPR valid_product() [L934] int retValue_acc ; [L937] retValue_acc = 1 [L938] return (retValue_acc); [L798] RET, EXPR valid_product() [L798] tmp = valid_product() [L800] COND TRUE \read(tmp) [L802] FCALL setup() [L803] CALL runTest() [L782] CALL test() [L45] int splverifierCounter ; [L46] int tmp ; [L47] int tmp___0 ; [L48] int tmp___1 ; [L49] int tmp___2 ; [L52] splverifierCounter = 0 [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND TRUE \read(tmp) [L66] CALL waterRise() [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L66] RET waterRise() [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND FALSE !(\read(pumpRunning)) [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND FALSE !(\read(pumpRunning)) [L198] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND TRUE ! pumpRunning [L159] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L894] int retValue_acc ; [L897] COND FALSE !(waterLevel < 2) [L901] retValue_acc = 0 [L902] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L159] RET, EXPR isHighWaterLevel() [L159] tmp = isHighWaterLevel() [L161] COND TRUE \read(tmp) [L163] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L208] pumpRunning = 1 [L223] RET activatePump__wrappee__highWaterSensor() [L163] RET activatePump() [L198] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND TRUE tmp == 0 [L699] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L699] RET, EXPR isPumpRunning() [L699] tmp___0 = isPumpRunning() [L701] COND TRUE \read(tmp___0) [L703] CALL __automaton_fail() [L317] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.1s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 39.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1435 SDtfs, 4039 SDslu, 1696 SDs, 0 SdLazy, 9700 SolverSat, 2668 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 415 SyntacticMatches, 7 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1022occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 602 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1347 NumberOfCodeBlocks, 1347 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1136 ConstructedInterpolants, 0 QuantifiedInterpolants, 433066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 184/214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...