/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:55:27,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:55:27,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:55:27,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:55:27,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:55:27,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:55:27,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:55:27,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:55:27,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:55:27,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:55:27,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:55:27,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:55:27,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:55:27,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:55:27,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:55:27,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:55:28,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:55:28,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:55:28,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:55:28,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:55:28,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:55:28,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:55:28,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:55:28,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:55:28,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:55:28,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:55:28,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:55:28,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:55:28,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:55:28,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:55:28,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:55:28,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:55:28,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:55:28,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:55:28,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:55:28,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:55:28,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:55:28,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:55:28,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:55:28,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:55:28,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:55:28,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:55:28,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:55:28,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:55:28,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:55:28,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:55:28,047 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:55:28,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:55:28,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:55:28,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:55:28,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:55:28,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:55:28,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:55:28,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:55:28,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:55:28,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:55:28,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:55:28,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:55:28,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:55:28,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:55:28,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:55:28,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:55:28,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:55:28,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:55:28,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:55:28,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:55:28,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:55:28,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:55:28,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:55:28,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:55:28,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:55:28,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:55:28,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:55:28,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:55:28,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:55:28,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:55:28,396 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:55:28,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-18 16:55:28,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d747ff3b/eb972597606a4b17bb152f601200ee4a/FLAGe692ac44e [2020-08-18 16:55:29,065 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:55:29,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-18 16:55:29,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d747ff3b/eb972597606a4b17bb152f601200ee4a/FLAGe692ac44e [2020-08-18 16:55:29,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d747ff3b/eb972597606a4b17bb152f601200ee4a [2020-08-18 16:55:29,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:55:29,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:55:29,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:55:29,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:55:29,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:55:29,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:55:29" (1/1) ... [2020-08-18 16:55:29,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:29, skipping insertion in model container [2020-08-18 16:55:29,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:55:29" (1/1) ... [2020-08-18 16:55:29,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:55:29,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:55:29,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:55:29,886 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:55:29,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:55:30,010 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:55:30,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30 WrapperNode [2020-08-18 16:55:30,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:55:30,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:55:30,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:55:30,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:55:30,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (1/1) ... [2020-08-18 16:55:30,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (1/1) ... [2020-08-18 16:55:30,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (1/1) ... [2020-08-18 16:55:30,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (1/1) ... [2020-08-18 16:55:30,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (1/1) ... [2020-08-18 16:55:30,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (1/1) ... [2020-08-18 16:55:30,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (1/1) ... [2020-08-18 16:55:30,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:55:30,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:55:30,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:55:30,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:55:30,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:55:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:55:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:55:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:55:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:55:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:55:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:55:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:55:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:55:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:55:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:55:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:55:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:55:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:55:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:55:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:55:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:55:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:55:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:55:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:55:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:55:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:55:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:55:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:55:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:55:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:55:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:55:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:55:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:55:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:55:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:55:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:55:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:55:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:55:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:55:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:55:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:55:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:55:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:55:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:55:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:55:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:55:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:55:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:55:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:55:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:55:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:55:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:55:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:55:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:55:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:55:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:55:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:55:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:55:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:55:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:55:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:55:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:55:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:55:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:55:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:55:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:55:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:55:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:55:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:55:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:55:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:55:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:55:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:55:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:55:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:55:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:55:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:55:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:55:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:55:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:55:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:55:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:55:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:55:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:55:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:55:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:55:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:55:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:55:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:55:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:55:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:55:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:55:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:55:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:55:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:55:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:55:31,223 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:55:31,223 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:55:31,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:55:31 BoogieIcfgContainer [2020-08-18 16:55:31,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:55:31,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:55:31,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:55:31,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:55:31,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:55:29" (1/3) ... [2020-08-18 16:55:31,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8f271c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:55:31, skipping insertion in model container [2020-08-18 16:55:31,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:30" (2/3) ... [2020-08-18 16:55:31,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8f271c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:55:31, skipping insertion in model container [2020-08-18 16:55:31,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:55:31" (3/3) ... [2020-08-18 16:55:31,238 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2020-08-18 16:55:31,250 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:55:31,258 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:55:31,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:55:31,300 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:55:31,300 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:55:31,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:55:31,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:55:31,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:55:31,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:55:31,301 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:55:31,302 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:55:31,325 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-18 16:55:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:55:31,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:31,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:31,339 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:31,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:31,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1529441714, now seen corresponding path program 1 times [2020-08-18 16:55:31,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:31,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756831991] [2020-08-18 16:55:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,072 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:32,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:55:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:55:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:55:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:32,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756831991] [2020-08-18 16:55:32,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:32,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:55:32,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007184037] [2020-08-18 16:55:32,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:55:32,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:32,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:55:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:55:32,193 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-08-18 16:55:33,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:33,510 INFO L93 Difference]: Finished difference Result 358 states and 461 transitions. [2020-08-18 16:55:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:55:33,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:55:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:33,529 INFO L225 Difference]: With dead ends: 358 [2020-08-18 16:55:33,529 INFO L226 Difference]: Without dead ends: 193 [2020-08-18 16:55:33,534 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 [2020-08-18 16:55:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-18 16:55:33,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2020-08-18 16:55:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-18 16:55:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-18 16:55:33,657 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 52 [2020-08-18 16:55:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:33,658 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-18 16:55:33,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:55:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-18 16:55:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:55:33,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:33,663 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] [2020-08-18 16:55:33,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:55:33,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:33,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2080089166, now seen corresponding path program 1 times [2020-08-18 16:55:33,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:33,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87008375] [2020-08-18 16:55:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,972 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:33,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:55:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:55:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:55:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:34,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87008375] [2020-08-18 16:55:34,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:34,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:55:34,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493581645] [2020-08-18 16:55:34,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:55:34,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:55:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:55:34,072 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 4 states. [2020-08-18 16:55:34,509 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:35,432 INFO L93 Difference]: Finished difference Result 281 states and 340 transitions. [2020-08-18 16:55:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:55:35,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:55:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:35,436 INFO L225 Difference]: With dead ends: 281 [2020-08-18 16:55:35,436 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 16:55:35,438 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 [2020-08-18 16:55:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 16:55:35,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 147. [2020-08-18 16:55:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-18 16:55:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2020-08-18 16:55:35,496 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 53 [2020-08-18 16:55:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:35,496 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2020-08-18 16:55:35,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:55:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2020-08-18 16:55:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 16:55:35,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:35,508 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] [2020-08-18 16:55:35,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:55:35,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:35,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1856420908, now seen corresponding path program 1 times [2020-08-18 16:55:35,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:35,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424334871] [2020-08-18 16:55:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,900 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:55:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:55:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:36,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:55:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:36,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424334871] [2020-08-18 16:55:36,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:36,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:55:36,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365631445] [2020-08-18 16:55:36,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:55:36,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:36,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:55:36,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:55:36,034 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand 8 states. [2020-08-18 16:55:36,387 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:36,697 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:36,939 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:37,184 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:37,881 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:40,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:40,069 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2020-08-18 16:55:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:55:40,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 16:55:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:40,079 INFO L225 Difference]: With dead ends: 506 [2020-08-18 16:55:40,082 INFO L226 Difference]: Without dead ends: 383 [2020-08-18 16:55:40,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:55:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-18 16:55:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 314. [2020-08-18 16:55:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-08-18 16:55:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 377 transitions. [2020-08-18 16:55:40,172 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 377 transitions. Word has length 58 [2020-08-18 16:55:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:40,173 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 377 transitions. [2020-08-18 16:55:40,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:55:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 377 transitions. [2020-08-18 16:55:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 16:55:40,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:40,175 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] [2020-08-18 16:55:40,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:55:40,175 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:40,176 INFO L82 PathProgramCache]: Analyzing trace with hash 425111279, now seen corresponding path program 1 times [2020-08-18 16:55:40,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:40,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428683523] [2020-08-18 16:55:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,437 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:55:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:55:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:55:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:55:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:40,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428683523] [2020-08-18 16:55:40,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:40,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:55:40,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669505069] [2020-08-18 16:55:40,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:55:40,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:55:40,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:55:40,557 INFO L87 Difference]: Start difference. First operand 314 states and 377 transitions. Second operand 8 states. [2020-08-18 16:55:40,891 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:42,249 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:42,593 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:42,865 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:43,128 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:44,085 INFO L93 Difference]: Finished difference Result 973 states and 1259 transitions. [2020-08-18 16:55:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:55:44,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 16:55:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:44,091 INFO L225 Difference]: With dead ends: 973 [2020-08-18 16:55:44,092 INFO L226 Difference]: Without dead ends: 683 [2020-08-18 16:55:44,094 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 [2020-08-18 16:55:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-18 16:55:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 609. [2020-08-18 16:55:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-08-18 16:55:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 743 transitions. [2020-08-18 16:55:44,215 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 743 transitions. Word has length 63 [2020-08-18 16:55:44,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:44,216 INFO L479 AbstractCegarLoop]: Abstraction has 609 states and 743 transitions. [2020-08-18 16:55:44,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:55:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 743 transitions. [2020-08-18 16:55:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 16:55:44,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:44,219 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] [2020-08-18 16:55:44,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:55:44,220 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:44,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1458119221, now seen corresponding path program 1 times [2020-08-18 16:55:44,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:44,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872838197] [2020-08-18 16:55:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,474 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:44,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:55:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:55:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:55:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:55:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 16:55:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:44,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872838197] [2020-08-18 16:55:44,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:44,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:55:44,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859273986] [2020-08-18 16:55:44,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:55:44,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:44,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:55:44,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:55:44,585 INFO L87 Difference]: Start difference. First operand 609 states and 743 transitions. Second operand 6 states. [2020-08-18 16:55:44,947 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:46,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:46,885 INFO L93 Difference]: Finished difference Result 1435 states and 1848 transitions. [2020-08-18 16:55:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:55:46,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 16:55:46,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:46,892 INFO L225 Difference]: With dead ends: 1435 [2020-08-18 16:55:46,892 INFO L226 Difference]: Without dead ends: 850 [2020-08-18 16:55:46,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:55:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-18 16:55:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 777. [2020-08-18 16:55:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-08-18 16:55:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 940 transitions. [2020-08-18 16:55:47,027 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 940 transitions. Word has length 67 [2020-08-18 16:55:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:47,027 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 940 transitions. [2020-08-18 16:55:47,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:55:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 940 transitions. [2020-08-18 16:55:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 16:55:47,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:47,029 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] [2020-08-18 16:55:47,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:55:47,030 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:47,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:47,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1610113419, now seen corresponding path program 1 times [2020-08-18 16:55:47,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:47,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54334181] [2020-08-18 16:55:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:55:47,098 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:55:47,098 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:55:47,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:55:47,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:55:47 BoogieIcfgContainer [2020-08-18 16:55:47,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:55:47,129 INFO L168 Benchmark]: Toolchain (without parser) took 17793.74 ms. Allocated memory was 141.0 MB in the beginning and 493.4 MB in the end (delta: 352.3 MB). Free memory was 103.2 MB in the beginning and 237.3 MB in the end (delta: -134.1 MB). Peak memory consumption was 218.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:55:47,130 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:55:47,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.74 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 172.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:55:47,132 INFO L168 Benchmark]: Boogie Preprocessor took 94.75 ms. Allocated memory is still 203.9 MB. Free memory was 172.1 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:55:47,133 INFO L168 Benchmark]: RCFGBuilder took 1122.42 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.0 MB in the beginning and 192.4 MB in the end (delta: -24.4 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:55:47,133 INFO L168 Benchmark]: TraceAbstraction took 15896.77 ms. Allocated memory was 235.9 MB in the beginning and 493.4 MB in the end (delta: 257.4 MB). Free memory was 191.0 MB in the beginning and 237.3 MB in the end (delta: -46.3 MB). Peak memory consumption was 211.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:55:47,137 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.74 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 172.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.75 ms. Allocated memory is still 203.9 MB. Free memory was 172.1 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1122.42 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.0 MB in the beginning and 192.4 MB in the end (delta: -24.4 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15896.77 ms. Allocated memory was 235.9 MB in the beginning and 493.4 MB in the end (delta: 257.4 MB). Free memory was 191.0 MB in the beginning and 237.3 MB in the end (delta: -46.3 MB). Peak memory consumption was 211.2 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: 15.8s, 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, 2650 SolverSat, 820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7s 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...