/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:07:16,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:07:16,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:07:16,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:07:16,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:07:16,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:07:16,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:07:16,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:07:16,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:07:16,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:07:16,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:07:16,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:07:16,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:07:16,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:07:16,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:07:16,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:07:16,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:07:16,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:07:16,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:07:16,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:07:16,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:07:16,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:07:16,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:07:16,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:07:16,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:07:16,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:07:16,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:07:16,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:07:16,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:07:16,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:07:16,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:07:16,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:07:16,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:07:16,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:07:16,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:07:16,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:07:16,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:07:16,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:07:16,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:07:16,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:07:16,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:07:16,186 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 16:07:16,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:07:16,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:07:16,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:07:16,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:07:16,210 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:07:16,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:07:16,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:07:16,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:07:16,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:07:16,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:07:16,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:07:16,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:07:16,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:07:16,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:07:16,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:07:16,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:07:16,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:07:16,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:07:16,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:07:16,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:07:16,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:07:16,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:07:16,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:07:16,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:07:16,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:07:16,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:07:16,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:07:16,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:07:16,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:07:16,215 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 [2020-08-18 16:07:16,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:07:16,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:07:16,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:07:16,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:07:16,537 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:07:16,538 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2020-08-18 16:07:16,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3dc1b35/b3e3e593846d49049f1561b9db9258c7/FLAG92cd1f8fa [2020-08-18 16:07:17,152 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:07:17,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2020-08-18 16:07:17,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3dc1b35/b3e3e593846d49049f1561b9db9258c7/FLAG92cd1f8fa [2020-08-18 16:07:17,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3dc1b35/b3e3e593846d49049f1561b9db9258c7 [2020-08-18 16:07:17,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:07:17,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:07:17,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:07:17,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:07:17,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:07:17,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:07:17" (1/1) ... [2020-08-18 16:07:17,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df63da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:17, skipping insertion in model container [2020-08-18 16:07:17,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:07:17" (1/1) ... [2020-08-18 16:07:17,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:07:17,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:07:17,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:07:17,955 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:07:18,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:07:18,141 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:07:18,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18 WrapperNode [2020-08-18 16:07:18,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:07:18,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:07:18,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:07:18,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:07:18,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (1/1) ... [2020-08-18 16:07:18,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (1/1) ... [2020-08-18 16:07:18,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (1/1) ... [2020-08-18 16:07:18,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (1/1) ... [2020-08-18 16:07:18,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (1/1) ... [2020-08-18 16:07:18,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (1/1) ... [2020-08-18 16:07:18,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (1/1) ... [2020-08-18 16:07:18,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:07:18,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:07:18,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:07:18,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:07:18,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (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 16:07:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:07:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:07:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:07:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:07:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:07:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:07:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:07:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:07:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:07:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:07:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:07:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:07:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:07:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:07:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:07:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:07:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:07:18,302 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:07:18,303 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:07:18,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:07:18,303 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:07:18,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:07:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:07:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:07:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:07:18,305 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:07:18,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:07:18,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:07:18,305 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:07:18,305 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:07:18,306 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:07:18,306 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:07:18,306 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:07:18,306 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:07:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:07:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:07:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:07:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:07:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:07:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:07:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:07:18,308 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:07:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:07:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:07:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:07:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:07:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:07:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:07:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:07:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:07:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:07:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:07:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:07:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:07:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:07:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:07:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:07:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:07:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:07:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:07:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:07:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:07:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:07:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:07:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:07:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:07:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:07:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:07:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:07:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:07:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:07:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:07:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:07:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:07:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:07:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:07:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:07:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:07:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:07:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:07:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:07:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:07:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:07:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:07:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:07:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:07:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:07:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:07:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:07:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:07:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:07:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:07:19,497 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:07:19,497 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:07:19,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:07:19 BoogieIcfgContainer [2020-08-18 16:07:19,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:07:19,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:07:19,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:07:19,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:07:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:07:17" (1/3) ... [2020-08-18 16:07:19,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b51028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:07:19, skipping insertion in model container [2020-08-18 16:07:19,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:18" (2/3) ... [2020-08-18 16:07:19,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b51028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:07:19, skipping insertion in model container [2020-08-18 16:07:19,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:07:19" (3/3) ... [2020-08-18 16:07:19,512 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2020-08-18 16:07:19,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:07:19,532 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:07:19,547 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:07:19,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:07:19,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:07:19,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:07:19,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:07:19,575 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:07:19,575 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:07:19,575 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:07:19,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:07:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2020-08-18 16:07:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:07:19,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:19,611 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 16:07:19,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:19,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2059475727, now seen corresponding path program 1 times [2020-08-18 16:07:19,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:19,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598493879] [2020-08-18 16:07:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,299 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:07:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:07:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:07:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:20,395 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 16:07:20,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598493879] [2020-08-18 16:07:20,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:20,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:07:20,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845893141] [2020-08-18 16:07:20,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:07:20,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:20,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:07:20,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:07:20,425 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 3 states. [2020-08-18 16:07:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:21,618 INFO L93 Difference]: Finished difference Result 349 states and 451 transitions. [2020-08-18 16:07:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:07:21,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:07:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:21,635 INFO L225 Difference]: With dead ends: 349 [2020-08-18 16:07:21,635 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 16:07:21,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:07:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 16:07:21,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 152. [2020-08-18 16:07:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 16:07:21,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 16:07:21,769 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 52 [2020-08-18 16:07:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:21,770 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 16:07:21,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:07:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 16:07:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:07:21,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:21,784 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 16:07:21,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:07:21,785 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:21,785 INFO L82 PathProgramCache]: Analyzing trace with hash 342362752, now seen corresponding path program 1 times [2020-08-18 16:07:21,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:21,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103850080] [2020-08-18 16:07:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,119 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:22,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:07:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:07:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:07:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,170 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 16:07:22,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103850080] [2020-08-18 16:07:22,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:22,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:07:22,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505032460] [2020-08-18 16:07:22,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:07:22,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:22,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:07:22,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:07:22,174 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 4 states. [2020-08-18 16:07:22,629 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:23,622 INFO L93 Difference]: Finished difference Result 276 states and 334 transitions. [2020-08-18 16:07:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:07:23,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:07:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:23,628 INFO L225 Difference]: With dead ends: 276 [2020-08-18 16:07:23,628 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 16:07:23,630 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 16:07:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 16:07:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 143. [2020-08-18 16:07:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-18 16:07:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2020-08-18 16:07:23,674 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 53 [2020-08-18 16:07:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:23,675 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2020-08-18 16:07:23,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:07:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2020-08-18 16:07:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:07:23,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:23,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:07:23,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:07:23,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash -970398275, now seen corresponding path program 1 times [2020-08-18 16:07:23,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:23,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046120191] [2020-08-18 16:07:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,984 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:23,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:24,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:24,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:24,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:07:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:07:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:24,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:07:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:24,076 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 16:07:24,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046120191] [2020-08-18 16:07:24,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:24,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:07:24,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290390484] [2020-08-18 16:07:24,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:07:24,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:24,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:07:24,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:07:24,081 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 8 states. [2020-08-18 16:07:24,454 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:24,776 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:25,016 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:25,242 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:25,945 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:28,006 INFO L93 Difference]: Finished difference Result 491 states and 604 transitions. [2020-08-18 16:07:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:07:28,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 16:07:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:28,014 INFO L225 Difference]: With dead ends: 491 [2020-08-18 16:07:28,014 INFO L226 Difference]: Without dead ends: 372 [2020-08-18 16:07:28,016 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 16:07:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-08-18 16:07:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 310. [2020-08-18 16:07:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-08-18 16:07:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 373 transitions. [2020-08-18 16:07:28,091 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 373 transitions. Word has length 57 [2020-08-18 16:07:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:28,091 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 373 transitions. [2020-08-18 16:07:28,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:07:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 373 transitions. [2020-08-18 16:07:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 16:07:28,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:28,093 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 16:07:28,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:07:28,094 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:28,094 INFO L82 PathProgramCache]: Analyzing trace with hash -542420815, now seen corresponding path program 1 times [2020-08-18 16:07:28,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:28,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075867422] [2020-08-18 16:07:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,421 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:07:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:07:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:07:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:07:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,561 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 16:07:28,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075867422] [2020-08-18 16:07:28,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:28,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:07:28,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620863668] [2020-08-18 16:07:28,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:07:28,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:28,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:07:28,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:07:28,564 INFO L87 Difference]: Start difference. First operand 310 states and 373 transitions. Second operand 8 states. [2020-08-18 16:07:29,021 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:30,406 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:30,789 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:31,079 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:31,333 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:32,332 INFO L93 Difference]: Finished difference Result 958 states and 1241 transitions. [2020-08-18 16:07:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:07:32,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 16:07:32,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:32,342 INFO L225 Difference]: With dead ends: 958 [2020-08-18 16:07:32,342 INFO L226 Difference]: Without dead ends: 672 [2020-08-18 16:07:32,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:07:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-08-18 16:07:32,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 601. [2020-08-18 16:07:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-08-18 16:07:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 735 transitions. [2020-08-18 16:07:32,507 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 735 transitions. Word has length 63 [2020-08-18 16:07:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:32,508 INFO L479 AbstractCegarLoop]: Abstraction has 601 states and 735 transitions. [2020-08-18 16:07:32,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:07:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 735 transitions. [2020-08-18 16:07:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 16:07:32,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:32,512 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 16:07:32,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:07:32,512 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:32,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:32,513 INFO L82 PathProgramCache]: Analyzing trace with hash -785539273, now seen corresponding path program 1 times [2020-08-18 16:07:32,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:32,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263389373] [2020-08-18 16:07:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,785 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:32,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:07:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:07:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:07:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:07:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 16:07:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:32,874 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 16:07:32,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263389373] [2020-08-18 16:07:32,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:32,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:07:32,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136634532] [2020-08-18 16:07:32,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:07:32,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:07:32,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:07:32,880 INFO L87 Difference]: Start difference. First operand 601 states and 735 transitions. Second operand 6 states. [2020-08-18 16:07:33,322 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:35,124 INFO L93 Difference]: Finished difference Result 1408 states and 1818 transitions. [2020-08-18 16:07:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:07:35,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 16:07:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:35,132 INFO L225 Difference]: With dead ends: 1408 [2020-08-18 16:07:35,132 INFO L226 Difference]: Without dead ends: 831 [2020-08-18 16:07:35,135 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 [2020-08-18 16:07:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-18 16:07:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 761. [2020-08-18 16:07:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-08-18 16:07:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 924 transitions. [2020-08-18 16:07:35,279 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 924 transitions. Word has length 67 [2020-08-18 16:07:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:35,280 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 924 transitions. [2020-08-18 16:07:35,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:07:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 924 transitions. [2020-08-18 16:07:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 16:07:35,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:35,282 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 16:07:35,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:07:35,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:35,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1064344695, now seen corresponding path program 1 times [2020-08-18 16:07:35,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:35,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303016630] [2020-08-18 16:07:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:07:35,347 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:07:35,347 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:07:35,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:07:35,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:07:35 BoogieIcfgContainer [2020-08-18 16:07:35,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:07:35,378 INFO L168 Benchmark]: Toolchain (without parser) took 17906.99 ms. Allocated memory was 140.5 MB in the beginning and 529.0 MB in the end (delta: 388.5 MB). Free memory was 102.6 MB in the beginning and 107.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 384.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:07:35,379 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:07:35,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.41 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 167.1 MB in the end (delta: -64.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:07:35,381 INFO L168 Benchmark]: Boogie Preprocessor took 90.77 ms. Allocated memory is still 202.9 MB. Free memory was 167.1 MB in the beginning and 162.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:07:35,382 INFO L168 Benchmark]: RCFGBuilder took 1269.10 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 162.5 MB in the beginning and 186.5 MB in the end (delta: -24.0 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:07:35,382 INFO L168 Benchmark]: TraceAbstraction took 15871.94 ms. Allocated memory was 235.4 MB in the beginning and 529.0 MB in the end (delta: 293.6 MB). Free memory was 185.1 MB in the beginning and 107.0 MB in the end (delta: 78.0 MB). Peak memory consumption was 371.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:07:35,386 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.41 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 167.1 MB in the end (delta: -64.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.77 ms. Allocated memory is still 202.9 MB. Free memory was 167.1 MB in the beginning and 162.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1269.10 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 162.5 MB in the beginning and 186.5 MB in the end (delta: -24.0 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15871.94 ms. Allocated memory was 235.4 MB in the beginning and 529.0 MB in the end (delta: 293.6 MB). Free memory was 185.1 MB in the beginning and 107.0 MB in the end (delta: 78.0 MB). Peak memory consumption was 371.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 694]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L414] int waterLevel = 1; [L415] int methaneLevelCritical = 0; [L517] int cleanupTimeShifts = 4; [L769] int pumpRunning = 0; [L770] int systemActive = 1; [L596] int retValue_acc ; [L597] int tmp ; [L601] FCALL select_helpers() [L602] FCALL select_features() [L603] CALL, EXPR valid_product() [L645] int retValue_acc ; [L648] retValue_acc = 1 [L649] return (retValue_acc); [L603] RET, EXPR valid_product() [L603] tmp = valid_product() [L605] COND TRUE \read(tmp) [L607] FCALL setup() [L608] CALL runTest() [L587] CALL test() [L701] int splverifierCounter ; [L702] int tmp ; [L703] int tmp___0 ; [L704] int tmp___1 ; [L705] int tmp___2 ; [L708] splverifierCounter = 0 [L710] COND TRUE 1 [L712] COND TRUE splverifierCounter < 4 [L718] tmp = __VERIFIER_nondet_int() [L720] COND TRUE \read(tmp) [L722] CALL waterRise() [L432] COND TRUE waterLevel < 2 [L433] waterLevel = waterLevel + 1 [L722] RET waterRise() [L728] tmp___0 = __VERIFIER_nondet_int() [L730] COND FALSE !(\read(tmp___0)) [L738] tmp___2 = __VERIFIER_nondet_int() [L740] COND FALSE !(\read(tmp___2)) [L744] tmp___1 = __VERIFIER_nondet_int() [L746] COND TRUE \read(tmp___1) [L748] CALL stopSystem() [L987] COND FALSE !(\read(pumpRunning)) [L994] systemActive = 0 [L748] RET stopSystem() [L755] CALL timeShift() [L776] COND FALSE !(\read(pumpRunning)) [L783] COND FALSE !(\read(systemActive)) [L791] CALL __utac_acc__Specification3_spec__1() [L657] int tmp ; [L658] int tmp___0 ; [L659] int tmp___1 ; [L663] CALL, EXPR isMethaneLevelCritical() [L453] int retValue_acc ; [L456] retValue_acc = methaneLevelCritical [L457] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L669] CALL, EXPR getWaterLevel() [L485] int retValue_acc ; [L488] retValue_acc = waterLevel [L489] return (retValue_acc); [L669] RET, EXPR getWaterLevel() [L669] tmp___0 = getWaterLevel() [L671] COND TRUE tmp___0 == 2 [L673] CALL, EXPR isPumpRunning() [L901] int retValue_acc ; [L904] retValue_acc = pumpRunning [L905] return (retValue_acc); [L673] RET, EXPR isPumpRunning() [L673] tmp___1 = isPumpRunning() [L675] COND FALSE !(\read(tmp___1)) [L679] CALL __automaton_fail() [L694] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 693 SDtfs, 1225 SDslu, 422 SDs, 0 SdLazy, 2566 SolverSat, 749 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, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=761occurred 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, 268 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 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...