/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:38:10,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:38:10,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:38:10,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:38:10,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:38:10,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:38:10,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:38:10,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:38:10,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:38:10,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:38:10,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:38:10,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:38:10,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:38:11,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:38:11,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:38:11,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:38:11,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:38:11,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:38:11,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:38:11,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:38:11,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:38:11,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:38:11,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:38:11,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:38:11,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:38:11,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:38:11,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:38:11,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:38:11,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:38:11,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:38:11,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:38:11,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:38:11,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:38:11,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:38:11,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:38:11,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:38:11,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:38:11,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:38:11,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:38:11,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:38:11,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:38:11,038 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 [2020-08-21 23:38:11,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:38:11,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:38:11,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:38:11,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:38:11,085 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:38:11,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:38:11,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:38:11,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:38:11,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:38:11,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:38:11,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:38:11,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:38:11,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:38:11,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:38:11,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:38:11,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:38:11,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:38:11,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:38:11,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:38:11,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:38:11,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:38:11,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:38:11,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:38:11,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:38:11,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:38:11,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:38:11,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:38:11,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:38:11,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:38:11,091 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:38:11,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:38:11,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:38:11,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:38:11,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:38:11,432 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:38:11,433 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-21 23:38:11,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c756e56f1/bc8d0f2997dd405b8afb07b120220a8a/FLAG8bd7d2483 [2020-08-21 23:38:12,049 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:38:12,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-21 23:38:12,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c756e56f1/bc8d0f2997dd405b8afb07b120220a8a/FLAG8bd7d2483 [2020-08-21 23:38:12,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c756e56f1/bc8d0f2997dd405b8afb07b120220a8a [2020-08-21 23:38:12,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:38:12,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:38:12,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:38:12,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:38:12,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:38:12,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:38:12" (1/1) ... [2020-08-21 23:38:12,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68feb839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:12, skipping insertion in model container [2020-08-21 23:38:12,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:38:12" (1/1) ... [2020-08-21 23:38:12,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:38:12,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:38:12,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:38:12,863 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:38:12,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:38:13,013 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:38:13,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13 WrapperNode [2020-08-21 23:38:13,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:38:13,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:38:13,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:38:13,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:38:13,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (1/1) ... [2020-08-21 23:38:13,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (1/1) ... [2020-08-21 23:38:13,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (1/1) ... [2020-08-21 23:38:13,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (1/1) ... [2020-08-21 23:38:13,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (1/1) ... [2020-08-21 23:38:13,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (1/1) ... [2020-08-21 23:38:13,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (1/1) ... [2020-08-21 23:38:13,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:38:13,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:38:13,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:38:13,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:38:13,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (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 [2020-08-21 23:38:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:38:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:38:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:38:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:38:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:38:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:38:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:38:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:38:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 23:38:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:38:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:38:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:38:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:38:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:38:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:38:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 23:38:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 23:38:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 23:38:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:38:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:38:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:38:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:38:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:38:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:38:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:38:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:38:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:38:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:38:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:38:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:38:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:38:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:38:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:38:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:38:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:38:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:38:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:38:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 23:38:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:38:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:38:13,176 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:38:13,176 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:38:13,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:38:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:38:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:38:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:38:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:38:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:38:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 23:38:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 23:38:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:38:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:38:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:38:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:38:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:38:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:38:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:38:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 23:38:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:38:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:38:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:38:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:38:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:38:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:38:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:38:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:38:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:38:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 23:38:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 23:38:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:38:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:38:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:38:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:38:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:38:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:38:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:38:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:38:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:38:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:38:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:38:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:38:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:38:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:38:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:38:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:38:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:38:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:38:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:38:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:38:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:38:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:38:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:38:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:38:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:38:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:38:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:38:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:38:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:38:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:38:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:38:14,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:38:14,298 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:38:14,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:38:14 BoogieIcfgContainer [2020-08-21 23:38:14,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:38:14,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:38:14,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:38:14,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:38:14,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:38:12" (1/3) ... [2020-08-21 23:38:14,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fefa187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:38:14, skipping insertion in model container [2020-08-21 23:38:14,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:38:13" (2/3) ... [2020-08-21 23:38:14,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fefa187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:38:14, skipping insertion in model container [2020-08-21 23:38:14,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:38:14" (3/3) ... [2020-08-21 23:38:14,312 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2020-08-21 23:38:14,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:38:14,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:38:14,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:38:14,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:38:14,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:38:14,365 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:38:14,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:38:14,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:38:14,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:38:14,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:38:14,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:38:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-21 23:38:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:38:14,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:14,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:14,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:14,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1529441714, now seen corresponding path program 1 times [2020-08-21 23:38:14,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:14,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204698525] [2020-08-21 23:38:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,088 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:15,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:38:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:38:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:38:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:15,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204698525] [2020-08-21 23:38:15,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:15,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:38:15,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430671797] [2020-08-21 23:38:15,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:38:15,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:15,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:38:15,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:38:15,244 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-08-21 23:38:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:16,563 INFO L93 Difference]: Finished difference Result 358 states and 461 transitions. [2020-08-21 23:38:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:38:16,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 23:38:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:16,582 INFO L225 Difference]: With dead ends: 358 [2020-08-21 23:38:16,582 INFO L226 Difference]: Without dead ends: 193 [2020-08-21 23:38:16,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:38:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-21 23:38:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2020-08-21 23:38:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-21 23:38:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-21 23:38:16,711 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 52 [2020-08-21 23:38:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:16,712 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-21 23:38:16,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:38:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-21 23:38:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 23:38:16,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:16,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:16,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:38:16,724 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:16,724 INFO L82 PathProgramCache]: Analyzing trace with hash 2080089166, now seen corresponding path program 1 times [2020-08-21 23:38:16,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:16,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875652747] [2020-08-21 23:38:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,132 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:17,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:38:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:38:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:38:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:17,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875652747] [2020-08-21 23:38:17,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:17,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:38:17,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506190352] [2020-08-21 23:38:17,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:38:17,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:17,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:38:17,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:38:17,186 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 4 states. [2020-08-21 23:38:17,666 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:18,669 INFO L93 Difference]: Finished difference Result 281 states and 340 transitions. [2020-08-21 23:38:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:38:18,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 23:38:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:18,674 INFO L225 Difference]: With dead ends: 281 [2020-08-21 23:38:18,674 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 23:38:18,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:38:18,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 23:38:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 147. [2020-08-21 23:38:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-21 23:38:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2020-08-21 23:38:18,718 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 53 [2020-08-21 23:38:18,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:18,718 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2020-08-21 23:38:18,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:38:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2020-08-21 23:38:18,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 23:38:18,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:18,721 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] [2020-08-21 23:38:18,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:38:18,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:18,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1856420908, now seen corresponding path program 1 times [2020-08-21 23:38:18,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:18,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197565147] [2020-08-21 23:38:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,041 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:38:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:38:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:38:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:19,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197565147] [2020-08-21 23:38:19,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:19,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:38:19,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894012647] [2020-08-21 23:38:19,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:38:19,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:19,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:38:19,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:38:19,135 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand 8 states. [2020-08-21 23:38:19,505 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:19,837 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:20,086 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:20,334 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:21,072 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:23,318 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2020-08-21 23:38:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:38:23,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 23:38:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:23,326 INFO L225 Difference]: With dead ends: 506 [2020-08-21 23:38:23,326 INFO L226 Difference]: Without dead ends: 383 [2020-08-21 23:38:23,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:38:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-21 23:38:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 314. [2020-08-21 23:38:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-08-21 23:38:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 377 transitions. [2020-08-21 23:38:23,413 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 377 transitions. Word has length 58 [2020-08-21 23:38:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:23,414 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 377 transitions. [2020-08-21 23:38:23,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:38:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 377 transitions. [2020-08-21 23:38:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 23:38:23,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:23,416 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] [2020-08-21 23:38:23,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:38:23,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash 425111279, now seen corresponding path program 1 times [2020-08-21 23:38:23,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:23,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410859448] [2020-08-21 23:38:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,732 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:23,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:38:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:38:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:38:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 23:38:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:23,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410859448] [2020-08-21 23:38:23,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:23,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:38:23,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474722283] [2020-08-21 23:38:23,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:38:23,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:23,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:38:23,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:38:23,817 INFO L87 Difference]: Start difference. First operand 314 states and 377 transitions. Second operand 8 states. [2020-08-21 23:38:24,140 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:25,538 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:25,884 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:26,168 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:26,411 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:27,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:27,344 INFO L93 Difference]: Finished difference Result 973 states and 1259 transitions. [2020-08-21 23:38:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:38:27,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 23:38:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:27,352 INFO L225 Difference]: With dead ends: 973 [2020-08-21 23:38:27,353 INFO L226 Difference]: Without dead ends: 683 [2020-08-21 23:38:27,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:38:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-21 23:38:27,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 609. [2020-08-21 23:38:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-08-21 23:38:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 743 transitions. [2020-08-21 23:38:27,549 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 743 transitions. Word has length 63 [2020-08-21 23:38:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:27,551 INFO L479 AbstractCegarLoop]: Abstraction has 609 states and 743 transitions. [2020-08-21 23:38:27,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:38:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 743 transitions. [2020-08-21 23:38:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 23:38:27,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:27,557 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] [2020-08-21 23:38:27,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:38:27,557 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:27,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1458119221, now seen corresponding path program 1 times [2020-08-21 23:38:27,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:27,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635152610] [2020-08-21 23:38:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,820 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:38:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:38:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:38:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 23:38:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 23:38:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:27,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635152610] [2020-08-21 23:38:27,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:27,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:38:27,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185652252] [2020-08-21 23:38:27,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:38:27,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:27,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:38:27,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:38:27,926 INFO L87 Difference]: Start difference. First operand 609 states and 743 transitions. Second operand 6 states. [2020-08-21 23:38:28,200 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:30,025 INFO L93 Difference]: Finished difference Result 1435 states and 1848 transitions. [2020-08-21 23:38:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:38:30,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 23:38:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:30,032 INFO L225 Difference]: With dead ends: 1435 [2020-08-21 23:38:30,032 INFO L226 Difference]: Without dead ends: 850 [2020-08-21 23:38:30,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:38:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-21 23:38:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 777. [2020-08-21 23:38:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-08-21 23:38:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 940 transitions. [2020-08-21 23:38:30,235 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 940 transitions. Word has length 67 [2020-08-21 23:38:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:30,236 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 940 transitions. [2020-08-21 23:38:30,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:38:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 940 transitions. [2020-08-21 23:38:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 23:38:30,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:30,238 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] [2020-08-21 23:38:30,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:38:30,238 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:30,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:30,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1610113419, now seen corresponding path program 1 times [2020-08-21 23:38:30,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:30,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707054439] [2020-08-21 23:38:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:38:30,345 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:38:30,345 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:38:30,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:38:30,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:38:30 BoogieIcfgContainer [2020-08-21 23:38:30,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:38:30,399 INFO L168 Benchmark]: Toolchain (without parser) took 18048.43 ms. Allocated memory was 139.5 MB in the beginning and 514.3 MB in the end (delta: 374.9 MB). Free memory was 100.5 MB in the beginning and 459.5 MB in the end (delta: -359.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:30,402 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 23:38:30,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.94 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 166.5 MB in the end (delta: -66.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:30,411 INFO L168 Benchmark]: Boogie Preprocessor took 87.93 ms. Allocated memory is still 201.3 MB. Free memory was 166.5 MB in the beginning and 162.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:30,412 INFO L168 Benchmark]: RCFGBuilder took 1200.90 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 162.5 MB in the beginning and 189.3 MB in the end (delta: -26.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:30,413 INFO L168 Benchmark]: TraceAbstraction took 16090.54 ms. Allocated memory was 234.4 MB in the beginning and 514.3 MB in the end (delta: 280.0 MB). Free memory was 187.8 MB in the beginning and 459.5 MB in the end (delta: -271.6 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:30,429 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.94 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 166.5 MB in the end (delta: -66.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.93 ms. Allocated memory is still 201.3 MB. Free memory was 166.5 MB in the beginning and 162.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1200.90 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 162.5 MB in the beginning and 189.3 MB in the end (delta: -26.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16090.54 ms. Allocated memory was 234.4 MB in the beginning and 514.3 MB in the end (delta: 280.0 MB). Free memory was 187.8 MB in the beginning and 459.5 MB in the end (delta: -271.6 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 769]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L124] int pumpRunning = 0; [L125] int systemActive = 1; [L568] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L812] int waterLevel = 1; [L813] int methaneLevelCritical = 0; [L915] int cleanupTimeShifts = 4; [L988] int retValue_acc ; [L989] int tmp ; [L993] FCALL select_helpers() [L994] FCALL select_features() [L995] CALL, EXPR valid_product() [L803] int retValue_acc ; [L806] retValue_acc = 1 [L807] return (retValue_acc); [L995] RET, EXPR valid_product() [L995] tmp = valid_product() [L997] COND TRUE \read(tmp) [L999] FCALL setup() [L1000] CALL runTest() [L982] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L830] COND TRUE waterLevel < 2 [L831] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___1) [L96] CALL stopSystem() [L343] COND FALSE !(\read(pumpRunning)) [L350] systemActive = 0 [L96] RET stopSystem() [L103] CALL timeShift() [L132] COND FALSE !(\read(pumpRunning)) [L139] COND FALSE !(\read(systemActive)) [L147] CALL __utac_acc__Specification3_spec__1() [L366] int tmp ; [L367] int tmp___0 ; [L368] int tmp___1 ; [L372] CALL, EXPR isMethaneLevelCritical() [L851] int retValue_acc ; [L854] retValue_acc = methaneLevelCritical [L855] return (retValue_acc); [L372] RET, EXPR isMethaneLevelCritical() [L372] tmp = isMethaneLevelCritical() [L374] COND FALSE !(\read(tmp)) [L378] CALL, EXPR getWaterLevel() [L883] int retValue_acc ; [L886] retValue_acc = waterLevel [L887] return (retValue_acc); [L378] RET, EXPR getWaterLevel() [L378] tmp___0 = getWaterLevel() [L380] COND TRUE tmp___0 == 2 [L382] CALL, EXPR isPumpRunning() [L257] int retValue_acc ; [L260] retValue_acc = pumpRunning [L261] return (retValue_acc); [L382] RET, EXPR isPumpRunning() [L382] tmp___1 = isPumpRunning() [L384] COND FALSE !(\read(tmp___1)) [L388] CALL __automaton_fail() [L769] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 719 SDtfs, 1300 SDslu, 479 SDs, 0 SdLazy, 2649 SolverSat, 820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=777occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 283 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...