/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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:11:00,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:11:00,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:11:00,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:11:00,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:11:00,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:11:00,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:11:00,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:11:00,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:11:00,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:11:00,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:11:00,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:11:00,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:11:00,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:11:00,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:11:00,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:11:00,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:11:00,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:11:00,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:11:00,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:11:00,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:11:00,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:11:00,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:11:00,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:11:00,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:11:00,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:11:00,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:11:00,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:11:00,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:11:00,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:11:00,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:11:00,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:11:00,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:11:00,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:11:00,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:11:00,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:11:00,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:11:00,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:11:00,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:11:00,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:11:00,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:11:00,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 11:11:00,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:11:00,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:11:00,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:11:00,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:11:00,218 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:11:00,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:11:00,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:11:00,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:11:00,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:11:00,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:11:00,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:11:00,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:11:00,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:11:00,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:11:00,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:11:00,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:11:00,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:11:00,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:11:00,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:11:00,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:11:00,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:11:00,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:11:00,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:11:00,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:11:00,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:11:00,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:11:00,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:11:00,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:11:00,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:11:00,224 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 11:11:00,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:11:00,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:11:00,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:11:00,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:11:00,562 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:11:00,563 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-18 11:11:00,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/426fa4931/ac929abffa184783a39b9562a95ccdd0/FLAG41faaae28 [2020-08-18 11:11:01,170 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:11:01,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-18 11:11:01,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/426fa4931/ac929abffa184783a39b9562a95ccdd0/FLAG41faaae28 [2020-08-18 11:11:01,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/426fa4931/ac929abffa184783a39b9562a95ccdd0 [2020-08-18 11:11:01,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:11:01,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:11:01,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:11:01,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:11:01,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:11:01,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:11:01" (1/1) ... [2020-08-18 11:11:01,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c09893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:01, skipping insertion in model container [2020-08-18 11:11:01,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:11:01" (1/1) ... [2020-08-18 11:11:01,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:11:01,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:11:01,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:11:01,937 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:11:02,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:11:02,243 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:11:02,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02 WrapperNode [2020-08-18 11:11:02,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:11:02,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:11:02,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:11:02,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:11:02,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (1/1) ... [2020-08-18 11:11:02,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (1/1) ... [2020-08-18 11:11:02,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (1/1) ... [2020-08-18 11:11:02,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (1/1) ... [2020-08-18 11:11:02,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (1/1) ... [2020-08-18 11:11:02,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (1/1) ... [2020-08-18 11:11:02,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (1/1) ... [2020-08-18 11:11:02,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:11:02,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:11:02,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:11:02,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:11:02,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:11:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:11:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:11:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:11:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:11:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:11:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:11:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:11:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:11:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:11:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:11:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:11:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:11:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:11:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:11:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:11:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:11:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-18 11:11:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-18 11:11:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-18 11:11:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-18 11:11:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-18 11:11:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-18 11:11:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:11:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-18 11:11:02,410 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-18 11:11:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:11:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:11:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:11:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:11:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:11:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:11:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 11:11:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 11:11:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:11:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:11:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:11:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:11:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:11:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:11:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:11:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:11:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:11:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:11:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:11:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:11:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:11:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:11:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 11:11:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:11:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:11:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:11:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:11:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:11:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:11:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:11:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:11:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:11:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:11:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:11:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:11:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:11:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:11:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:11:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:11:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:11:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:11:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:11:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:11:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:11:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:11:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:11:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:11:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:11:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:11:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:11:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:11:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:11:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:11:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:11:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:11:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:11:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:11:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 11:11:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:11:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:11:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:11:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:11:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 11:11:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:11:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:11:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:11:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:11:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:11:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-18 11:11:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:11:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-18 11:11:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-18 11:11:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 11:11:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-18 11:11:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-18 11:11:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:11:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-18 11:11:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-18 11:11:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-18 11:11:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:11:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:11:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:11:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:11:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:11:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:11:03,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:11:03,530 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:11:03,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:11:03 BoogieIcfgContainer [2020-08-18 11:11:03,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:11:03,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:11:03,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:11:03,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:11:03,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:11:01" (1/3) ... [2020-08-18 11:11:03,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd485f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:11:03, skipping insertion in model container [2020-08-18 11:11:03,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:11:02" (2/3) ... [2020-08-18 11:11:03,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd485f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:11:03, skipping insertion in model container [2020-08-18 11:11:03,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:11:03" (3/3) ... [2020-08-18 11:11:03,544 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_productSimulator.cil.c [2020-08-18 11:11:03,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:11:03,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:11:03,577 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:11:03,601 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:11:03,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:11:03,602 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:11:03,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:11:03,602 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:11:03,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:11:03,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:11:03,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:11:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-08-18 11:11:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 11:11:03,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:11:03,655 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:11:03,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:11:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:11:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1384301403, now seen corresponding path program 1 times [2020-08-18 11:11:03,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:11:03,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329502127] [2020-08-18 11:11:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:11:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,579 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:11:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:11:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 11:11:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:11:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:11:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:11:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:11:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 11:11:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:11:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:11:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 11:11:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:11:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:11:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 11:11:04,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329502127] [2020-08-18 11:11:04,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:11:04,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:11:04,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990450400] [2020-08-18 11:11:04,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:11:04,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:11:04,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:11:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:11:04,812 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 5 states. [2020-08-18 11:11:07,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:11:07,022 INFO L93 Difference]: Finished difference Result 448 states and 591 transitions. [2020-08-18 11:11:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 11:11:07,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-18 11:11:07,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:11:07,041 INFO L225 Difference]: With dead ends: 448 [2020-08-18 11:11:07,041 INFO L226 Difference]: Without dead ends: 254 [2020-08-18 11:11:07,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:11:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-18 11:11:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-18 11:11:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-18 11:11:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2020-08-18 11:11:07,163 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 84 [2020-08-18 11:11:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:11:07,164 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2020-08-18 11:11:07,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:11:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2020-08-18 11:11:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-18 11:11:07,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:11:07,170 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:11:07,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:11:07,170 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:11:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:11:07,171 INFO L82 PathProgramCache]: Analyzing trace with hash 435784209, now seen corresponding path program 1 times [2020-08-18 11:11:07,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:11:07,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558986839] [2020-08-18 11:11:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:11:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,535 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:11:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:11:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 11:11:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:11:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:11:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:11:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:11:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 11:11:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:11:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:11:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:11:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:11:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 11:11:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 11:11:07,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558986839] [2020-08-18 11:11:07,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:11:07,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:11:07,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025281231] [2020-08-18 11:11:07,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:11:07,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:11:07,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:11:07,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:11:07,676 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand 6 states. [2020-08-18 11:11:08,347 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:11:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:11:10,033 INFO L93 Difference]: Finished difference Result 372 states and 469 transitions. [2020-08-18 11:11:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:11:10,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-08-18 11:11:10,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:11:10,039 INFO L225 Difference]: With dead ends: 372 [2020-08-18 11:11:10,040 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 11:11:10,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:11:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 11:11:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 196. [2020-08-18 11:11:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-08-18 11:11:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2020-08-18 11:11:10,092 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 85 [2020-08-18 11:11:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:11:10,093 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2020-08-18 11:11:10,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:11:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2020-08-18 11:11:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 11:11:10,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:11:10,096 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:11:10,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:11:10,096 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:11:10,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:11:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash 681264365, now seen corresponding path program 1 times [2020-08-18 11:11:10,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:11:10,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258429429] [2020-08-18 11:11:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:11:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,491 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:11:10,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:11:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 11:11:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:11:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:11:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:11:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:11:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 11:11:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:11:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:11:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:11:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:11:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 11:11:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 11:11:10,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258429429] [2020-08-18 11:11:10,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:11:10,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:11:10,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696577440] [2020-08-18 11:11:10,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:11:10,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:11:10,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:11:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:11:10,723 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand 12 states. [2020-08-18 11:11:11,503 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 11:11:12,165 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-18 11:11:12,952 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 11:11:13,993 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 11:11:14,368 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 11:11:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:11:18,192 INFO L93 Difference]: Finished difference Result 643 states and 818 transitions. [2020-08-18 11:11:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 11:11:18,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-08-18 11:11:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:11:18,199 INFO L225 Difference]: With dead ends: 643 [2020-08-18 11:11:18,200 INFO L226 Difference]: Without dead ends: 488 [2020-08-18 11:11:18,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-18 11:11:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-18 11:11:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 397. [2020-08-18 11:11:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-18 11:11:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 497 transitions. [2020-08-18 11:11:18,323 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 497 transitions. Word has length 90 [2020-08-18 11:11:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:11:18,323 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 497 transitions. [2020-08-18 11:11:18,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:11:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 497 transitions. [2020-08-18 11:11:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 11:11:18,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:11:18,327 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:11:18,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:11:18,328 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:11:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:11:18,328 INFO L82 PathProgramCache]: Analyzing trace with hash -326319286, now seen corresponding path program 1 times [2020-08-18 11:11:18,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:11:18,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558705340] [2020-08-18 11:11:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:11:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,672 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:11:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:11:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 11:11:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:11:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:11:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:11:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:11:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 11:11:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:11:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:11:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 11:11:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:11:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 11:11:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 11:11:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 11:11:18,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558705340] [2020-08-18 11:11:18,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:11:18,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:11:18,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718071115] [2020-08-18 11:11:18,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:11:18,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:11:18,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:11:18,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:11:18,835 INFO L87 Difference]: Start difference. First operand 397 states and 497 transitions. Second operand 10 states. [2020-08-18 11:11:19,335 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 11:11:21,408 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 11:11:21,865 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 11:11:22,233 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 11:11:22,594 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 11:11:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:11:24,535 INFO L93 Difference]: Finished difference Result 1234 states and 1653 transitions. [2020-08-18 11:11:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:11:24,539 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-08-18 11:11:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:11:24,546 INFO L225 Difference]: With dead ends: 1234 [2020-08-18 11:11:24,546 INFO L226 Difference]: Without dead ends: 878 [2020-08-18 11:11:24,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-08-18 11:11:24,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-08-18 11:11:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 778. [2020-08-18 11:11:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-08-18 11:11:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 987 transitions. [2020-08-18 11:11:24,752 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 987 transitions. Word has length 96 [2020-08-18 11:11:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:11:24,752 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 987 transitions. [2020-08-18 11:11:24,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:11:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 987 transitions. [2020-08-18 11:11:24,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-18 11:11:24,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:11:24,757 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:11:24,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:11:24,757 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:11:24,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:11:24,758 INFO L82 PathProgramCache]: Analyzing trace with hash 635729360, now seen corresponding path program 1 times [2020-08-18 11:11:24,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:11:24,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819424149] [2020-08-18 11:11:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:11:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,052 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:11:25,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:11:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 11:11:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:11:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:11:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 11:11:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:11:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:11:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 11:11:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:11:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:11:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 11:11:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 11:11:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 11:11:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 11:11:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 11:11:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:11:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 11:11:25,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819424149] [2020-08-18 11:11:25,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:11:25,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:11:25,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530727412] [2020-08-18 11:11:25,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:11:25,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:11:25,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:11:25,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:11:25,189 INFO L87 Difference]: Start difference. First operand 778 states and 987 transitions. Second operand 8 states. [2020-08-18 11:11:26,198 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 11:11:29,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:11:29,895 INFO L93 Difference]: Finished difference Result 1840 states and 2490 transitions. [2020-08-18 11:11:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:11:29,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-08-18 11:11:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:11:29,904 INFO L225 Difference]: With dead ends: 1840 [2020-08-18 11:11:29,904 INFO L226 Difference]: Without dead ends: 1103 [2020-08-18 11:11:29,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-18 11:11:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-18 11:11:30,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1024. [2020-08-18 11:11:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-08-18 11:11:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1298 transitions. [2020-08-18 11:11:30,134 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1298 transitions. Word has length 100 [2020-08-18 11:11:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:11:30,135 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1298 transitions. [2020-08-18 11:11:30,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:11:30,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1298 transitions. [2020-08-18 11:11:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-18 11:11:30,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:11:30,138 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:11:30,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:11:30,138 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:11:30,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:11:30,139 INFO L82 PathProgramCache]: Analyzing trace with hash -950611836, now seen corresponding path program 1 times [2020-08-18 11:11:30,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:11:30,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987559327] [2020-08-18 11:11:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:11:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:11:30,202 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:11:30,203 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:11:30,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:11:30,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:11:30 BoogieIcfgContainer [2020-08-18 11:11:30,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:11:30,235 INFO L168 Benchmark]: Toolchain (without parser) took 28747.76 ms. Allocated memory was 140.0 MB in the beginning and 635.4 MB in the end (delta: 495.5 MB). Free memory was 101.7 MB in the beginning and 159.9 MB in the end (delta: -58.2 MB). Peak memory consumption was 437.2 MB. Max. memory is 7.1 GB. [2020-08-18 11:11:30,236 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 11:11:30,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.10 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 169.5 MB in the end (delta: -68.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:11:30,238 INFO L168 Benchmark]: Boogie Preprocessor took 91.11 ms. Allocated memory is still 203.9 MB. Free memory was 169.5 MB in the beginning and 165.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:11:30,239 INFO L168 Benchmark]: RCFGBuilder took 1199.86 ms. Allocated memory was 203.9 MB in the beginning and 238.0 MB in the end (delta: 34.1 MB). Free memory was 165.4 MB in the beginning and 184.8 MB in the end (delta: -19.5 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-08-18 11:11:30,240 INFO L168 Benchmark]: TraceAbstraction took 26696.48 ms. Allocated memory was 238.0 MB in the beginning and 635.4 MB in the end (delta: 397.4 MB). Free memory was 183.4 MB in the beginning and 159.9 MB in the end (delta: 23.5 MB). Peak memory consumption was 420.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:11:30,243 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.10 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 169.5 MB in the end (delta: -68.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.11 ms. Allocated memory is still 203.9 MB. Free memory was 169.5 MB in the beginning and 165.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1199.86 ms. Allocated memory was 203.9 MB in the beginning and 238.0 MB in the end (delta: 34.1 MB). Free memory was 165.4 MB in the beginning and 184.8 MB in the end (delta: -19.5 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26696.48 ms. Allocated memory was 238.0 MB in the beginning and 635.4 MB in the end (delta: 397.4 MB). Free memory was 183.4 MB in the beginning and 159.9 MB in the end (delta: 23.5 MB). Peak memory consumption was 420.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1022]: 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; [L406] int cleanupTimeShifts = 4; [L510] int __SELECTED_FEATURE_base ; [L511] int __SELECTED_FEATURE_highWaterSensor ; [L512] int __SELECTED_FEATURE_lowWaterSensor ; [L513] int __SELECTED_FEATURE_methaneQuery ; [L514] int __SELECTED_FEATURE_methaneAlarm ; [L515] int __SELECTED_FEATURE_stopCommand ; [L516] int __SELECTED_FEATURE_startCommand ; [L517] int __GUIDSL_ROOT_PRODUCTION ; [L605] int pumpRunning = 0; [L606] int systemActive = 1; [L1027] int waterLevel = 1; [L1028] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] CALL select_helpers() [L968] __GUIDSL_ROOT_PRODUCTION = 1 [L492] RET select_helpers() [L493] CALL select_features() [L953] __SELECTED_FEATURE_base = 1 [L954] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L954] RET, EXPR select_one() [L954] __SELECTED_FEATURE_highWaterSensor = select_one() [L955] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L955] RET, EXPR select_one() [L955] __SELECTED_FEATURE_lowWaterSensor = select_one() [L956] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L956] RET, EXPR select_one() [L956] __SELECTED_FEATURE_methaneQuery = select_one() [L957] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L957] RET, EXPR select_one() [L957] __SELECTED_FEATURE_methaneAlarm = select_one() [L958] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L958] RET, EXPR select_one() [L958] __SELECTED_FEATURE_stopCommand = select_one() [L959] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L959] RET, EXPR select_one() [L959] __SELECTED_FEATURE_startCommand = select_one() [L493] RET select_features() [L494] CALL, EXPR valid_product() [L973] int retValue_acc ; [L976] retValue_acc = __SELECTED_FEATURE_base [L977] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 [L530] COND TRUE 1 [L532] COND TRUE splverifierCounter < 4 [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) [L542] CALL waterRise() [L1045] COND TRUE waterLevel < 2 [L1046] waterLevel = waterLevel + 1 [L542] RET waterRise() [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___2)) [L570] tmp___1 = __VERIFIER_nondet_int() [L572] COND TRUE \read(tmp___1) [L573] COND TRUE \read(__SELECTED_FEATURE_stopCommand) [L575] CALL stopSystem() [L917] COND FALSE !(\read(pumpRunning)) [L924] systemActive = 0 [L575] RET stopSystem() [L585] CALL timeShift() [L613] COND FALSE !(\read(pumpRunning)) [L620] COND FALSE !(\read(systemActive)) [L628] CALL __utac_acc__Specification3_spec__1() [L985] int tmp ; [L986] int tmp___0 ; [L987] int tmp___1 ; [L991] CALL, EXPR isMethaneLevelCritical() [L1066] int retValue_acc ; [L1069] retValue_acc = methaneLevelCritical [L1070] return (retValue_acc); [L991] RET, EXPR isMethaneLevelCritical() [L991] tmp = isMethaneLevelCritical() [L993] COND FALSE !(\read(tmp)) [L997] CALL, EXPR getWaterLevel() [L1098] int retValue_acc ; [L1101] retValue_acc = waterLevel [L1102] return (retValue_acc); [L997] RET, EXPR getWaterLevel() [L997] tmp___0 = getWaterLevel() [L999] COND TRUE tmp___0 == 2 [L1001] CALL, EXPR isPumpRunning() [L831] int retValue_acc ; [L834] retValue_acc = pumpRunning [L835] return (retValue_acc); [L1001] RET, EXPR isPumpRunning() [L1001] tmp___1 = isPumpRunning() [L1003] COND FALSE !(\read(tmp___1)) [L1007] CALL __automaton_fail() [L1022] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 301 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.6s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 846 SDtfs, 3115 SDslu, 268 SDs, 0 SdLazy, 4695 SolverSat, 2607 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1024occurred 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: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 361 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 167384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 225/225 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...