/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:53:28,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:53:28,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:53:28,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:53:28,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:53:28,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:53:28,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:53:28,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:53:28,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:53:28,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:53:28,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:53:28,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:53:28,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:53:28,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:53:28,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:53:28,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:53:28,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:53:28,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:53:28,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:53:28,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:53:28,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:53:28,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:53:28,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:53:28,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:53:28,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:53:28,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:53:28,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:53:28,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:53:28,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:53:28,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:53:28,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:53:28,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:53:28,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:53:28,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:53:28,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:53:28,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:53:28,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:53:28,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:53:28,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:53:28,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:53:28,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:53:28,306 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 [2020-09-24 16:53:28,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:53:28,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:53:28,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:53:28,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:53:28,358 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:53:28,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:53:28,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:53:28,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:53:28,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:53:28,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:53:28,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:53:28,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:53:28,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:53:28,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:53:28,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:53:28,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:53:28,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:53:28,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:53:28,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:53:28,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:53:28,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:53:28,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:53:28,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:53:28,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:53:28,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:53:28,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:53:28,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:53:28,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:53:28,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:53:28,364 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 16:53:28,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:53:28,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:53:28,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:53:28,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:53:28,882 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:53:28,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product18.cil.c [2020-09-24 16:53:28,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ade8075b/a320ff15895d48698464569733461358/FLAG8cd90140c [2020-09-24 16:53:29,615 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:53:29,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product18.cil.c [2020-09-24 16:53:29,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ade8075b/a320ff15895d48698464569733461358/FLAG8cd90140c [2020-09-24 16:53:29,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ade8075b/a320ff15895d48698464569733461358 [2020-09-24 16:53:29,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:53:29,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:53:29,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:53:29,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:53:29,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:53:29,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:53:29" (1/1) ... [2020-09-24 16:53:29,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:29, skipping insertion in model container [2020-09-24 16:53:29,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:53:29" (1/1) ... [2020-09-24 16:53:29,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:53:29,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:53:30,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:53:30,447 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:53:30,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:53:30,572 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:53:30,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30 WrapperNode [2020-09-24 16:53:30,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:53:30,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:53:30,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:53:30,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:53:30,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (1/1) ... [2020-09-24 16:53:30,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (1/1) ... [2020-09-24 16:53:30,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (1/1) ... [2020-09-24 16:53:30,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (1/1) ... [2020-09-24 16:53:30,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (1/1) ... [2020-09-24 16:53:30,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (1/1) ... [2020-09-24 16:53:30,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (1/1) ... [2020-09-24 16:53:30,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:53:30,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:53:30,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:53:30,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:53:30,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:53:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:53:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:53:30,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:53:30,751 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:53:30,751 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:53:30,751 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:53:30,751 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:53:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:53:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:53:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:53:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:53:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:53:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 16:53:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:53:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:53:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:53:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:53:30,754 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:53:30,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:53:30,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:53:30,754 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:53:30,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:53:30,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:53:30,755 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:53:30,755 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:53:30,755 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:53:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:53:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:53:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:53:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:53:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 16:53:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:53:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:53:30,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:53:30,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:53:30,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:53:30,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:53:30,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:53:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:53:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:53:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:53:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:53:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:53:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:53:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 16:53:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:53:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:53:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:53:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:53:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:53:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:53:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:53:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 16:53:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:53:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:53:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:53:30,761 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:53:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:53:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:53:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:53:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:53:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:53:30,762 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:53:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:53:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:53:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:53:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:53:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:53:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:53:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:53:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:53:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:53:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:53:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:53:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:53:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:53:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:53:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:53:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:53:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:53:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:53:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:53:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:53:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:53:32,034 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:53:32,036 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:53:32,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:53:32 BoogieIcfgContainer [2020-09-24 16:53:32,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:53:32,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:53:32,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:53:32,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:53:32,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:53:29" (1/3) ... [2020-09-24 16:53:32,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20af26de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:53:32, skipping insertion in model container [2020-09-24 16:53:32,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:30" (2/3) ... [2020-09-24 16:53:32,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20af26de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:53:32, skipping insertion in model container [2020-09-24 16:53:32,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:53:32" (3/3) ... [2020-09-24 16:53:32,062 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product18.cil.c [2020-09-24 16:53:32,077 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:53:32,091 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:53:32,115 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:53:32,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:53:32,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:53:32,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:53:32,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:53:32,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:53:32,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:53:32,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:53:32,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:53:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states. [2020-09-24 16:53:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:53:32,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:53:32,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:53:32,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:53:32,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:53:32,237 INFO L82 PathProgramCache]: Analyzing trace with hash -2006265210, now seen corresponding path program 1 times [2020-09-24 16:53:32,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:53:32,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361571485] [2020-09-24 16:53:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:53:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:32,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:54,394 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:54,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:53:54,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:53:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21742 [2020-09-24 16:53:54,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:53:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 16:53:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 16:53:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:53:54,832 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:53:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:53:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:55,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:55,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:53:55,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-24 16:53:55,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:53:55,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:53:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:55,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:55,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:55,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:53:55,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:53:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:55,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:55,285 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:55,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:55,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:55,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:53:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:55,300 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:55,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:55,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:53:55,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:55,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:55,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:53:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:55,309 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:55,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:55,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:55,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:53:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:55,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:55,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:55,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:55,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:55,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:55,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:55,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:55,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:53:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:55,326 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:55,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:55,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:55,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:55,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:53:55,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361571485] [2020-09-24 16:53:55,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:53:55,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:53:55,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540696836] [2020-09-24 16:53:55,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:53:55,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:53:55,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:53:55,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:53:55,436 INFO L87 Difference]: Start difference. First operand 279 states. Second operand 4 states. [2020-09-24 16:53:55,950 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:53:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:53:56,940 INFO L93 Difference]: Finished difference Result 422 states and 503 transitions. [2020-09-24 16:53:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:53:56,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-24 16:53:56,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:53:56,962 INFO L225 Difference]: With dead ends: 422 [2020-09-24 16:53:56,963 INFO L226 Difference]: Without dead ends: 268 [2020-09-24 16:53:56,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:53:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-24 16:53:57,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2020-09-24 16:53:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-09-24 16:53:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 244 transitions. [2020-09-24 16:53:57,086 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 244 transitions. Word has length 142 [2020-09-24 16:53:57,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:53:57,088 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 244 transitions. [2020-09-24 16:53:57,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:53:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 244 transitions. [2020-09-24 16:53:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 16:53:57,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:53:57,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:53:57,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:53:57,102 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:53:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:53:57,102 INFO L82 PathProgramCache]: Analyzing trace with hash 887717177, now seen corresponding path program 1 times [2020-09-24 16:53:57,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:53:57,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845480770] [2020-09-24 16:53:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:53:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:14,544 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:14,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 16:54:14,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:54:14,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17387 [2020-09-24 16:54:14,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:54:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-09-24 16:54:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:54:14,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:14,913 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:54:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:54:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,018 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:54:15,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 16:54:15,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:54:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:15,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,051 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:54:15,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:54:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:15,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,057 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:15,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:54:15,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:54:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,064 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:15,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:15,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:15,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:15,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:54:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,070 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:15,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:54:15,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 16:54:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:54:15,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:54:15,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 16:54:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 16:54:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,099 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:15,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:15,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:54:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 16:54:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:15,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:15,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:15,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:54:15,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 16:54:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:15,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,121 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:15,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:15,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:54:15,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:54:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:54:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:54:15,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845480770] [2020-09-24 16:54:15,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:54:15,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:54:15,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957045128] [2020-09-24 16:54:15,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:54:15,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:54:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:54:15,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:54:15,178 INFO L87 Difference]: Start difference. First operand 228 states and 244 transitions. Second operand 9 states. [2020-09-24 16:54:15,771 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:54:16,987 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:54:17,347 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 16:54:17,679 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:54:18,022 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 16:54:18,332 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:54:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:54:18,524 INFO L93 Difference]: Finished difference Result 336 states and 380 transitions. [2020-09-24 16:54:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:54:18,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-09-24 16:54:18,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:54:18,527 INFO L225 Difference]: With dead ends: 336 [2020-09-24 16:54:18,527 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:54:18,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:54:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:54:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:54:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:54:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:54:18,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2020-09-24 16:54:18,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:54:18,535 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:54:18,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:54:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:54:18,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:54:18,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:54:18,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:54:18,726 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:54:18,915 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:54:19,040 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 10 [2020-09-24 16:54:19,213 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:54:19,383 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:54:19,719 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 16:54:20,055 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 16:54:20,390 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 16:54:20,717 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 16:54:20,873 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 189